Go & Connection Games
Nexus
Capture like Go, win like tic-tac-toe, and pay for every capture.
2 players
Games
Go & Connection Games
Enhanced Go
Go, where you can buy extra stones by removing your own.
2 players
Chess & Variants
Cat Chess
Chess with a third side: the Cats keep the peace.
1 player, taking one of the three sides
Card Games
Complex Hearts
Hearts, scored with complex numbers.
4 players
Math & Discovery
Quiver Quest
Mutate a quiver until every vertex turns red, and hunt for rules nobody has proved yet.
1 player, with community leaderboards