Nerdcubed recently did a little introductory video for this game (see it here), and it prompted me to download it. It's currently an alpha and very early on for that matter, but it's totally free, and anyone who has some nostalgia for 90s and early 2000s style platformer graphics and space exploration should try it. It's a charming little game that I've sunk probably five or six hours into now, trying to wrap my head around some of the mysteries and exploring the different planets. It also does microgravity very well, which is something I've always wanted more of in games. I will warn you, it's highly recommended you play it with a controller, and if you're going with a keyboard, be sure to check the key bindings from the launcher, because there's no in-game indication what the keyboard controls are. Again, alpha build. http://outerwilds.com/ for download.