SDL Asylum is a C/SDL port of Andy Southgate's 1994 game Asylum, originally for the Acorn Archimedes. In the game, Young Sigmund has a few problems. To help him resolve his mental instability, you must enter the surreal world of his inner mind and shut down the malfunctioning brain cells.
ChangeBlindness is a small game that demonstrates the change blindness phenomenon. The effect shows that our brains have a low-level (i.e. subconscious) change detection capability that can be disabled pretty easily (for instance, with a flicker of around 100ms). The game illustrates this using an increasing number of icons, one of which will change during a flicker. The goal of the game is to find the changing icon as quickly as possible.