PaddleSpace is a retro-80's inspired mash-up of 'Pong', 'Asteroids', and 'Galaga' to be released in 2014 after ten years in on-again/off-again development.
4GamesList is the best free alternative to Backloggd — like AniList, Letterboxd, or MyAnimeList but for video games. Track your game library, log playtime, sync Steam achievements and PSN trophies, browse game characters and studios, and connect with friends.