I've either lost or sold games from my NES, Genesis, GameBoy, GBA, Nintendo DS, and PC libraries. I've reacquired some of those games in recent months and years, such as X-Men, Toy Story, and Taz: Escape from Mars for the Genesis, Pokemon Yellow for GameBoy, Mario and Luigi: Superstar Saga for the GBA, and Sonic Rush for the DS. The others I either have yet to replace or just am not interested in repurchasing.