Here are some unfinished games, in no particular order. I may return to some of them some day. Dibs.
Mong - A pong clone written in Mathematica.
Pinball Invaders - A vertical scroller wherein you pilot a ship with two energy-paddles.
News Monster - A game-jame game made with Taliesin Beynon. You are a monster who must gobble up bad real-time headlines before they reach your child.
LTSPD - A wireframe-3D avoid-em-up written entirely in x86 assembly.
Shitstorm Dungeon - A game-jam game made with Craig Stern, Lyndsey Moulds and Nicholas Cassleman.
Shadow Vampire - a platformer where you play as a vampire who must stay in the shadows as they move over the course of many 22-second days.
Pop 'N Drop - A novel match-3 game with a new mechanic I invented.