We've been working away on tightening up Really Big Sky's performance for a lot of users. We found the cause of the most common performance issue and totally crushed it! Go into the Options screen and disable the Performance Graph if you're having slowdown issues :)
We've also added customisable controls for both keyboard and controllers, increased the range of compatibility with non-Microsoft controllers.
Additionally there are new tracks from our resident musicians, rebalancing of some modes (in a good way, no nerfs!), boss kills now increase your multiplier.