In Dinoleon by Quillraven you play a dinosaur chamaeleon creature that needs to avoid moving scanning areas by adjusting its color to the scan area's color.
In Mystic Woods by Quillraven you control a player in a top down adventure RPG example game. There is also a YoutTube video tutorial series linked on that repository site to go through the code step by step. Note that this game is an example for 1.6-JVM (=tutorial video series) and 2.0. There are two branches for this game. The fleks2 branch is the one for 2.0 API.
In Treasure Quest by mariorez you play a hero that helps to rid the land of flying bat-like creatures to get the promised treasure chest.
In Mystic Garden by Quillraven you control a hero who is searching for his girl! He woke up in a dark mystical garden and needs to collect all crystals to activate a portal that might bring him back to her.
This game also runs in the browser using TeaVM: Link to play
In Mystic Woods by Quillraven you control a player in a top down adventure RPG example game. There is also a YoutTube video tutorial series linked on that repository site to go through the code step by step.