Gazza

"Free and fully video-guided puzzle game. ~2 hours to 100%"

"Free autobattler. 50 wins must be done in MP, so a partner/alt is required. Beat the AI on hardest difficulty. Achievements unlock on close. See full review for help. ~3-4 hours to 100%, with an alt."

"Free MP strategy board game. Featues a viral achievement, need to create an account and requires a partner/alt for 40 wins. Most achievements only work in singleplayer. ~3-6 hours to 100%."