2. Design - JosepLleal/PsychoGames GitHub Wiki

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The game is set in a futuristic era, more specifically, year 2249. During this time, a certain woman is infected by microscopic aliens. But she is not alone, they have already invaded the whole planet.

What makes this woman special is that the alien queen resides inside her and in order to fight it, scientists have designed the microscopic ship X-002 to enter the woman's body and defeat the said queen.

X-Multiply ending

All the hit points have been calculated with the basic attack of the spaceship.

All the names have been created by us unless bosses names.

This level is pretty straight-forward. There are some enemies that charge at you in a line formation, one after the other. Others charge at you individually. These enemies have different sprites but essentially, they are the same.

There's also an enemy that can shoot at you. It is static on the bottom or top of the screen and shoots barrages of bullets in a cone-like shape. The bullet path is fixed and has a constant projectile velocity so avoiding the bullets and killing the enemy that shoots it is pretty easy.

When you are approaching the boss room, there's a pair of retractable tentacles that can kill you on impact. The player only has one choice to get through this enemy. You must kill it in order to pass.

After that, you encounter another enemy that cannot move but it spawns little mobs that can kill you. Kill the main mob to disable its ability to spawn more enemies. Right after entering the boss room. There are enemies that charge at you and 3 different eyes-like monsters. You can position yourself in the center of the map with both appendices extended in order to kill them at the same time. After you beat these enemies, you encounter the boss room.

This is a very simple boss with easy mechanics to handle. It shoots an orb and after a few seconds it explodes and releases 8 bullets, with a 45-degree angle between them. The space between bullets constantly grows, making them easily avoidable.

Hostur

Image	Name	Type	Life	Score
	Ball	Enemy	1	100
	Anemona	Static Enemy	2	600
	Shrimp	Enemy	1	200
	Big shrimp	Enemy	6	6000
	Tentacles	Mini Boss	13	0
	Jumper	Enemy	1	400
	Blue mouth	Static Enemy	6	8000
	Yellow eye	Enemy	1	200
	Big eye	Static Enemy	9	5000
	Boss balls	Enemy	1	100
	Hostur	Boss	120	100000

Image	Name	Type	Life	Score
	Speed	Power-up	1	1000
	Bomb	Power-up	1	1000
	Blue	Power-up	1	1000
	Red	Power-up	1	1000

This level is different from other ones, as it starts with the sight of a huge enemy, the boss. This boss, called Rokusu, is as large as the map.

Firstly, you go above the boss, where 3 mobs fall shooting 3 projectiles. After that you encounter the monster's fins (3 in total), you need to destroy them in order to pass because it shoots lightnings vertically. After the fins there is an eye that shoots projectiles in a conic shape.

Going forward, there are some enemies on top of its back and others flying which shoot one projectile. In order to go on, you need to destroy Rokusu's tail, allowing you to move under him.

At this stage, the boss releases mobs from its body which you have to either dodge or kill them. After you destroy the 2 small fins under Rokusu's body, it ejects his secondary head in order to finish you. This head shoots a very fast but predictable laser and it also charges you changing direction 2 times before it vanishes.

Rokusu

Image	Name	Type	Life	Score
	Flying Blue monster	Enemy	2	5000
	Big Fin	Static Enemy	21	3000
	Little Face	Static Enemy	20	1000
	Worm	Enemy	1	200
	Worm House	Static Enemy	12	1000
	Tail	Static Enemy	30	1000
	Little fins	Static Enemy	16	2000
	Flying worm	Enemy	1	400
	Rokusu's Head	Boss	80	200000

Image	Name	Type	Life	Score
	Speed	Power-up	1	1000
	Bomb	Power-up	1	1000
	Yellow	Power-up	1	1000
	Blue	Power-up	1	1000

This stage is a really large tunnel with craters on the top and bottom of the map. Each crater can have an enemy on top of it. It spawns big worms that explode upon death. If you position your ship with precision, you can shoot at both mobs, on top and bottom at the same time with your appendices. The central ship takes care of the projectiles caused by the death of the worm.

At the end of the tunnel, there are 3 faces that can shoot bombs at you. To disable them, shoot them in the eye until they are rendered useless. Once you exit the tunnel, there are a few enemies that can easily be taken care of. After that, a mini-boss with the shape of a worm spawns, it has a relatively large health pool so you should focus all 3 cannons on him to take him down faster. After that, there are more enemies. Once they are dead, you enter another tunnel where the boss is located. There are 4 mini-bosses. One on each corner of the map.

They shoot bouncing lasers but if you position yourself at the very entrance with the appendices extended, by the geometry of the laser, it cannot hit you and you can freely shoot at the bosses until they are dead.

Zarikasu

Image	Name	Type	Life	Score
	Worms Mouth	Static Enemy	12	2000
	Big Worm	Enemy	Head=2, Others=1	1000
	Blue monster	Enemy	2	800
	Big Face	Static Enemy	14	8000
	Projectile Big Face	Enemy	1	100
	Jumper	Enemy	1	400
	Giant Worm	Mini Boss	97	80000
	Flying Blue monster	Enemy	2	5000
	Zarikasu	Boss	20/head	50000/head

Image	Name	Type	Life	Score
	Blue	Power-up	1	1000
	Speed	Power-up	1	1000
	Speed Down	Power-up	1	1000
	Red	Power-up	1	1000
	Yellow	Power-up	1	1000
	1-UP	Power-up	1	1000

This level is very different from the other ones we've played through so far. At the moment it begins, we can see that this level plays a lot with the terrain. This means that knowing where to position your ship will be pivotal for the completion of this level. As we advance, we encounter non-destructible boulders that kill you on impact. They have a very defined movement (up and down) and velocity so it is rather easy to go through these. The complexity comes when we have enemies blocking your path. This can be tricky but the best solution is to get rid of them altogether so you have a wider space to maneuver.

There's a new type of enemy that jumps and shoots just like the static monster from level one. It also shoots barrages of bullets in a cone-like shape. There's also a new enemy that shoots 3 missiles at a very low speed but the twist that this enemy has it is that it can appear from behind the ship. As you advance you encounter a new enemy. It looks like a bouncing blob and shoots 1 or 2 bullets at a time in a narrow cone.

The hardest enemy on this level is the tentacle that can literally grab the ground and pull it. It spawns vertically so once he grabs onto something its mandatory to kill him. Don't allow him to pull the ground upwards or you will have a rough time.

As you approach the boss. There's a horizontal tentacle that pulls the ground to the right. Don't kill him before he finishes pulling. Once he is done, kill him and rapidly go through the opening created by the monster. You will have limited time because when you kill it, the ground resets to its original position.

And now we arrive at the boss. This is one of the easiest bosses in this game. The boss' main weapon is a cannon that shoots a wide barrage of bullets but there's some space between each projectile so you can avoid being damaged. If you pay close attention, you will see that the boss shoots when he pulls the lever beside him. He also has 2 stationary turrets that shoot bullets in a straight path. Said turrets need to be destroyed in order to access the outer barrier of the boss. Once you deal enough damage to it, it'll explode and reveal the main target inside it. He also has a drone that he can release to chase and shoot at you. It is indestructible but you can force it to retreat by damaging him.

As soon as the fight starts, go to the top-left corner but make sure you are not all the way up there. This will ensure you avoiding all projectiles that the boss shoots at you. The fight will be time consuming because your main gun and the upper appendix will not damage the boss at any time being. You rely on the seeking missiles to do the majority of the damage and your lower appendix will barely be able to hit the boss.

Ghomus

Image	Name	Type	Life	Score
	Blue monster	Enemy	2	800
	Jumper	Enemy	1	400
	Rock	Level Object	none	none
	Flying Blue monster	Enemy	2	5000
	Glue	Static Enemy	2	400
	Worm Grabber	Static Monster	6	400
	Mini Ghomus	None Targetable Enemy	none	none
	Ghomus	Boss	40	300000

Image	Name	Type	Life	Score
	Red	Power-up	1	1000
	Bomb	Power-up	1	1000
	Speed	Power-up	1	1000
	Speed Down	Power-up	1	1000
	Yellow	Power-up	1	1000
	Blue	Power-up	1	1000

This level is filled with destructible terrain. They appear as red spheres, one on top of the other and blocking your way. You can destroy them by shooting and this plays an important role if you want to beat this level.

You encounter a new type of enemy that shoot bullets in an arc. You can know when they are about to do so, so shoot if you watch them expand. When they can no longer do that, they will fire its bullets.

As you advance, you encounter big gems that block your path, they also block any incoming projectiles so you can not shoot through them. In order to get through, you must lower them and in order to do that you need to get rid of every single red sphere that is touching the gem. Even if one remains attached, the gem will be held in place, making it impossible to pass.

After you exit the cave with the gems, you will enter a tunnel filled with stalactites on top of the screen. These will drop a droplet every X seconds. You will die if you get in contact with it. After some time, the ground will be left behind and an endless lake will appear. Be careful because the droplets will splash the water and it´ll create more droplets that travel in an arc. The splash strength varies between each droplet. After some time, you will arrive at the boss.

It has a big worm-looking shape and half of its body is submerged under water. He shoots bullets in an arc wide enough to cover the entire map. Once you deal enough damage to it it´ll switch sides and then be behind you. Once he is in that position he´ll do the same attack and it´ll switch to its original position. He repeats this rotation until it dies.

You can also use the positional advantage to beat this boss. When he is is the frontal stage position yourself in front of the boss and you´ll be able to avoid all shots. When he is in the backwards stage, position yourself at the top of the map to the right side of the stalactite closest to the center of the screen. As he has a fixed bulled spread, in this area, you will be dodging all shots. Keep in mind that in this position you absolutely need the seeking missiles in order to beat is because no other bullets will be hitting the boss.

Hidra

Image	Name	Type	Life	Score
	Red Ball	Static Enemy	1	100
	Diamond	Level Object	none	none
	Plant	Static Enemy	2	1000
	Drop	Level Object	none	none
	Sperms	Enemy	1	300
	Hidra	Boss	78	500000

Image	Name	Type	Life	Score
	Speed	Power-up	1	1000
	Speed Down	Power-up	1	1000
	Blue	Power-up	1	1000
	Red	Power-up	1	1000
	Yellow	Power-up	1	1000

This level is divided into two phases:

In the first phase, the map is plenty of columns, some of them on the bottom and others on top. The first enemy that you encounter is a group of weak mobs, they only go upwards doing a sinusoidal motion and they die with a single hit of your basic attack. At the same time, 2 groups of balls (same mobs from level 1) charge at you in a formation while they shot a projectile.

The next type of enemy spawns on the bottom of the map and shoots you, they die with 2 hits of your BA. After some of these mobs, the difficulty drastically increases as you come upon with hives that spawn pink balls, who charge at you and immediately explode, creating a very fast little enemy. To complete this first phase and obtaining the checkpoint, you must pass the seven hives.

Between the first and second phase, the map changes from going left to right to going downwards. In this phase instead of columns there are little platforms. The first group of enemies goes from right to left of the screen shooting at you. When the first group of enemies appears, three power-ups (S, yellow and blue) and three enemies fall from the top of the screen.

The next obstacle that you encounter is a big platform that moves sideways. After this, there are little platforms wherein some of them there is a new enemy, a kind of mole that shoots when his head is uncovered. There is also a last new enemy before reaching the boss room. It looks like a worm and it is untargetable, that means that you only need to dodge him and his shots.

The level 6 boss named Darya is the tankiest boss if we don’t count Rokusu (level 2 boss). It appears from the bottom of the screen and immediately starts shooting a projectile that bounces off the walls of the room. While fighting with the boss, it also spawns a new enemy that looks like a fly and it shoots a very slow projectile.

To kill the boss, firstly you must destroy his two laterals parts, each one shooting a projectile that looks like an eye, then you also need to destroy his two horns and finally, after several hits, the boss will die.

Darya

Image	Name	Type	Life	Score
	Orange Insect	Enemy	1	200
	Ball	Enemy	1	100
	Blue monster	Enemy	2	800
	Hive	Static Enemy	9	8000
	Pink Ball	Enemy	1	400
	Grey Monster	Enemy	1	400
	Shrimp	Enemy	1	200
	Green Platform	Level Object	none	none
	Mole	Static Enemy	8	800
	Red Tentacle	None Targetable Enemy	none	none
	Fly	Enemy	1	1000
	Darya	Boss	60/side and 336/body	15000/horns and 100000/Boss

Image	Name	Type	Life	Score
	Speed	Power-up	1	1000
	Blue	Power-up	1	1000
	Red	Power-up	1	1000
	1-UP	Power-up	1	1000
	Yellow	Power-up	1	1000

The last stage begins. It is relatively short compared to any other levels but what makes this level hard to beat is that there's an overwhelming amount of enemies at any given time of the stage.

The first stage of this level you travel through a pretty narrow tunnel while you shoot down the waves of different enemies.

Once you exit the tunnel, you enter a blue tunnel which contains more enemies. The most perilous one is the crab-looking one. He can shoot at projectiles that travel in a sinusoidal path. He can grow large arms but he has to stay still in order to do so, once he is done he'll travel in a straight line at a very fast rate. You can either kill it before he finishes channeling or you can avoid him by staying out of his area of attack.

Once you finish the tunnel, you'll be granted a lot of power-ups in order to face the last boss. As soon as you enter the boss room, it'll display a short animation of the boss making its way to the screen and you'll see a blue woman transporting an egg.

This boss has 2 stages: the main boss and the egg. Once you defeat the main boss, the egg will hatch and it'll give birth to 4 small aliens.

This is when the second stage begins. They move really fast and shoots a laser, so it is really difficult to stay alive because you get easily overwhelmed by the fast-paced movements and the number of projectiles. You cannot cheese your way out of this boss. If you can beat it, it only depends on how good at the game you are. There's no other way.

Bykhee

Image	Name	Type	Life	Score
	Blue monster	Enemy	2	800
	Yellow eye	Enemy	1	200
	Flying Blue monster	Enemy	2	5000
	Glue	Static Enemy	2	400
	Little Eye	None Targetable Enemy	none	none
	Crushed	Static Enemy	9	8000
	Big Rock	Mini Boss	15	10000
	Bykhee's sons	Boss	250/1st 300/2nd 325/3rd 350/4th	100000/each son
	Bykhee	Boss	90	500000

Image	Name	Type	Life	Score
	Speed	Power-up	1	1000
	Bomb	Power-up	1	1000
	Yellow	Power-up	1	1000
	Blue	Power-up	1	1000
	Speed Down	Power-up	1	1000
	Red	Power-up	1	1000

At first, you start without any sort of power-ups. You only own the most basic projectile that you can spam at your will. You can also upgrade your power-ups by picking another of the same type. Power-ups a delivered by a little ship or dropped by enemies. When the first power-up is picked, no matters which color is (Red/Blue/Yellow), it will give you the tentacles. It requires a large amount of skill to use to its fullest extent. This power-up allows the ship to grow 2 controllable appendices that shoot the same projectile as the primary fire. One useful thing to keep in mind its that any power-ups on the primary fire will also be projected to both appendices. The way they work is actually really simple but its hard to master. They will go to the opposite direction of whatever key the player presses. They also have another purpose, they serve as a shield because they can block any incoming projectiles and any weak enemy will be killed if he enters in contact with any of the 2 appendices.

• Automatic bomb power-up: Enables the bomb type projectile that has a trajectory drop off so the bombs won't go as far as the primary fire. Position your ship carefully to use this power-up to its full potential. If this power-up is upgraded you can deploy bombs more often.

• Seeking missiles power-up: Enables the ship to shoot 4 seeking missiles. Right before it automatically shoots, it seeks its target on the screen, if no enemies are located, all of the missiles will go in a straight path. If this power-up is upgraded you can shot up to 6 seeking missilies.

• Laser power-up: It changes your primary fire to a laser that penetrates enemies, something that the basic bullet cannot do. His length covers the majority of the map, horizontally speaking. This power-up combined with the appendices power-up offers you one of the deadliest combos in the entire game. If upgraded, it deals significantly more damage.

• Shadow Shells: It increases your on-hit damage. What's interesting about this power-up is that the bullets will travel at the angle that the appendices are facing, with a total of 16 different angles. If upgraded, it strengthens your on-hit damage.

• Speed Boost: This power-up increases the speed of the ship.

• Speed Down: This power-up does exactly the opposite compared to the Speed Boost, it decreases the speed of the ship.

• Extra Live (1-UP): This power-up gives you one live.

The controls for this game are very simple and what makes them feel so smooth, is that they are extremely intuitive.

For the arcade version, you have a joystick on the left and you maneuver the ship with it. At the right, you have 6 buttons but only one of them is used to play.

They are intuitive because your character is placed on the left side of the screen. And the bullets shoot from left to right. Everything is simple and logical, just what you need when you want to design a great game.

Players : 2

Control : 8-way joystick

Buttons : 6

Arcade Cabinet

X-Multiply back flyer

The main goal of this shooter side-scroller is to beat each of the seven stages that the game offers to defeat the alien queen. To pass every level the player must defeat the Boss, located at the end of the map.

The player starts the game with 3 lifes, if the ship is hit by a projectile/enemy/ground the level is restarted and one life is lost, removing all the power-ups that the player obtained. To make levels easier there are checkpoints, one per level except level 2 and level 7 which doesn't own any of said checkpoints

Psycho Games has branched the types of enemies in 6:

• Enemy: A monster that can be killed and it moves (some of them can shot too).
• Static Enemy: A monster that can be killed but it doesn’t move.
• Non Targetable Enemy: A monster that can kill you but is immune to the ship’s projectiles.
• Level Object: They are like a mobile part of the map, they can’t be destroyed.
• Mini Boss: Monsters that are reasonably big, pretty tanky and they give a big score when it is killed.
• Boss: The final monster of every level.

Most of the arcade games, once all the levels are completed the game ends, but X-Multiply is an exception. To end the game the player must complete every level twice. Keep in mind that the second loop is substantially harder than the first one because it'll spawn more mobs and they will shoot more projectiles.

Once the game is ended, the ship will be picked up to safety after your arduous and fierce battle against the aliens.

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