Install bsdgames-nonfree by entering the following commands in the terminal:
sudo apt update sudo apt install bsdgames-nonfree
rogue, the classic dungeon exploration game
This is a text-based game common on (traditional) BSD systems. It may not be distributed freely, so it had to be broken off from the main bsdgames package and placed in non-free. . This package now contains only rogue, the classic dungeon exploration game.