I've sent the Steam keys needed to groupees.com! As soon as they have everything ready on their side, you should receive an e-mail from them letting you know that a Steam key is available :)
In other news, I've put together a video talking about how I'm going to donate the money made from Mysterious Space, and I'm being put in touch with an accountant, to make sure I handle everything properly! Check out the video, if you're interested: https://www.youtube.com/watch?v=TSRfd1bo7iY if you're not, the super-short story is that for my first donation, I'm aiming to support a space agency, PREFERABLY the Japanese space agency, JAXA, but I'm not sure if that's possible yet :P I'll definitely let you guys know how all that stuff goes.
Thanks for playing Mysterious Space :)