Basically, as long as you pledged a minimum of $80 to the Kickstarter project, you would have already received an email that contains the beta key. This beta key is redeemable on Steam, which would then allow you to play a solitary level from an early version of the game, where you will then get to check out some of the core mechanics involved in Mighty No. 9′.
Needless to say, this is not the finished article, and the developer will use any received feedback in order to shape the final release, not to mention one might see additional levels arrive on the beta in due time. Needless to say, there are two camps to Mighty No. 9 – one who cannot believe that folks would drop at least $80 for this title, while others who invested more than a Benjamin claim that they are pleased as punch. I guess it depends on which side of the divide you stand on, right?