https://www.pcgamer.com/smart-puzzler-qube-is-free-for-the-next-24-hours/ >If you're feeling stuck for games to play today, then here's a suggestion: try Q.U.B.E, the puzzler from 2012 about manipulating coloured blocks with sci-fi gloves. It's free for the next 24 hours or so, it'll only take you three hours to complete, and it's a smart game with lots of good ideas. Click here to grab it. >Don't expect flashy visuals—its environments are mainly sparse, sterile white rooms punctuated by the coloured blocks, and it definitely lacks a bit of personality. Still, I think it's worth playing, and so did our review at the time, which argued that some of its puzzles were "almost as impressive" as Portal's. High praise indeed.