GameBoy Advance e-Reader Games
Nintendo's 'e-Reader' peripheral is most fondly remembered by many as a passageway to supplementary goodies and items in games like Pokemon Emerald and the Gamecube versions of Animal Crossing. What many don't know is that, depending on which cards you got, you could get either a short animation or a fully-fledged game as a an perk for having these card(s). Below is an attempted exhaustion of the library for both the original Japanese e-Reader and the North American/Australian release (referred to in Japan as the 'e-Reader+').
40 Games