Kerkerkruip is a coffee-break roguelike game with a text adventure interface. This makes it unusually suitable for playing over gemini, and now you can do that:
It's a mostly solitary affair, but I added a couple of means of user interaction to take advantage of online play: a daily leaderboard, and a "ghosts file".
The game includes extensive help, so hopefully you'll be able to figure out how to play. The dungeon changes each day. Have fun!