I tested the indev beta and the final version, i really hope you get to release it in NES cartidge, it would be amazing.
Your game is very fun!
Yeah, but i couldn't split in multiple parcels, this is an common pratice here in Brazil (we call it "parcelamento", i don't know if this is a custom elsewere), this would bring more Brazilians into the game.
Instead Steam you could add an payment option using "pagseguro", or putting your game on "nuuvem" so it would be easyer to Brazilians pay and play and know the existence of this game.