Piranha is your run-of-the-mill Asteroids clone, but features a vast range of weapons and enemies across 100 levels of gameplay.
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.