It's a multiplayer text adventure shooter game! I couldn't actually connect to a room, but if you can figure that out leave a comment and let me know what commands you used!
Reminder to the game developers out there: A console (As in Command Prompt, or Terminal in Linux) game is the best place to start. My first 2 or 3 games were all made entirely in the console. The concepts you will learn will directly transfer over to your future projects.
In high school I created a text adventure in QBASIC, and one of the commands you needed to execute to finish the game was "Kill dead dog". If you didn't kill the dead dog, it would kill you as you left the room.