Career
An early exposure to the Nintendo Entertainment System explains why older titles provide him with inspiration. Blackeye software
= Eternal Daughter Eternal Daughter (2002) is a platform game that was developed over a two-year period. = I"m O.K. A platformer that Yu helped create, I"m O.K - A Murder Simulator, was a response to Jack Thompson"s open letter "A Modest Video Game Proposal".
Foreign-profit games
Yu has worked on several games sold outside of traditional distribution channels.
He helped create the award-winning 2007 Aquaria and was part of the two-man team that released it, Bit Blot. = Aquaria A collaboration between Yu and Alec Holowka (at times a long-distance one, as the two live in separate countries), Aquaria is a side-scrolling video game that takes place underwater.
= Spelunky Spelunky is a platform game with randomized level generation similar to roguelike games. lieutenant is reminiscent of the 1983 game Spelunker.
lieutenant was released as a freeware game in 2008 and was remade for Xbox 360 in 2012.
Other games
Graphical tileset for DoomRL
Yu has designed a level in Super Mario Maker for Polygon"s "Devs Make Mario" series.