Hollow Dungeon (Demo) is an open-source reimplementation of Hollow Dungeon via Shattered Pixel Dungeon engine. It falls under the Adventure Games subcategory and is available on the Android platform. The game is developed by QuasiStellar and is free to play.

The demo version of the game has some features implemented, including all level-1 spells and abilities, 2 playable heroes, dungeon map, Howling Cliffs location design, and 2 enemies. The game has a Discord channel and a Patreon page for those who want to contribute to the development of the game.

The game has a simple yet engaging gameplay that can keep you hooked for hours. The graphics are impressive and the sound effects are immersive. However, it is important to note that as it is a demo version, it may have some bugs and glitches that need to be fixed. Overall, Hollow Dungeon (Demo) is a promising game that has the potential to become a hit among adventure game enthusiasts.