Install gridlock.app by entering the following commands in the terminal:
sudo apt update sudo apt install gridlock.app
Description:
Collection of grid-based board games for GNUstep
Gridlock is a collection of grid-based board games for GNUstep, including Ataxx, Reversi, Gomoku, Connect Four, Breakthrough, Glass Bead, Hexapawn, Quad Wrangle, Cats and Dogs and Moray Eels. You can play against another person or computer opponents of varying difficulty, even over the network.
Homepage: http://dozingcatsoftware.com/Gridlock/readme.html
Version: 1.10-4build3
Section: universe/games