Abandonia - Abandonia is an abandonware website, focusing mainly on showcasing computer games and distributing...
Game Jolt - Game Jolt, where all the best free Indie Games are at!
Caiman.us - Freeware games database.
Retrospec - Online community and database of retro game remakes.
Abandonware DOS - A huge database of Windows and DOS abandonware games free to download. Screenshots, videos and manuals for most PC retro video games.
Old-Games.RU - The Old-Games.RU project is Russia's largest archive of old computer games.