A loud brick breaker after Arkanoid in a pane: steer with the mouse, catch thirteen kinds of capsule and a rain of gems, chain volt bricks, over a shimmering iridescent field. A real picture in kitty and Ghostty, block characters elsewhere.
Doom in a pane: Freedoom on the doomgeneric engine, a real picture in kitty and Ghostty, block characters elsewhere. Walk with the keys, turn with the mouse or the keys, while Claude works.
The classic mine-clearing puzzle in a pane: click or use the keys to clear the board. A timer, a best time, and a face that watches the board and glances over at Claude's work.