Amazing game. If you want to build a little factory and have waves of guys coming in, this is the game to get. You can even get it on mobile, which you can't do with Factorio. I'm excited for the big 4.0 release, I've currently played alpha 63 and normal 3. If this game gets bumped up to a couple dollars for the next release, I'll definately buy it. I also recommend against playing the beta on mobile, the wip tutorial and limited controls make it really difficult.