$60 or more
If you backed Bloodstained: Ritual of the Night, you may want to take a look at your contribution level. IGA and his team have just added another bonus to the $60 tier, which includes access to a PC beta by way of Steam. While a lot of other developers have used this scheme (hello Early Access), it directly parallels the folks over at Inti Creates, who Kickstarted Mighty No. 9 in the same fashion.
Update 5 [Kickstarter]