Features - hyvanmielenpelit/GnollHack GitHub Wiki

• Improved Graphical Interface — Large 64x96 tiles with many advanced features. Monsters can be up to 192x192 pixels in size. The game has over 23000 tiles.
• Animations — All characters have attack and kick animations, and spellcasters have also spell casting animations. Spell effects and traps have been animated.
• Advanced Sound System — Over 1100 game sounds that are played using FMOD and an internal sound set system.
• Music — Over 35 pieces of music, including over 10 original ones, specifically composed for GnollHack.
• Voice Acting — Voice acting for various game characters and relevant game events. The game features 97 voice actors in 110 roles and over 5000 voiceover lines.
• Gameplay Improvements — New magic system, new wearable slots, new mythic property system for items (prefixes and suffixes), new weapon quality classes, all item commands accessible from the inventory menu, in-game information for items and monsters, new status lines showing pet information, and a huge number of quality-of-life improvements, such as a pet pathing algorithm.
• Platform Support — Android, iOS, Windows, and Linux.

See Detailed Features for more information. You may also want to read How GnollHack differs from NetHack.