Sponsored versions get access to the full animation and gallery, as well as a swamp map and a new enemy.
Regarding payment check out Terriblethings12 reply below.
But I don't know if it's possible. (。・∀・)ノ
Viewing post in Syahata's bad day(beta v0.88.4) comments
Again, he ignored half of my questions and suggestions, I understand. Well, you see, you yourself confirmed that the paid version is much dominant over the free one. And it would be okay if there were only additional chips, but you decided to go ahead in the plot there, and let mere mortals enjoy what they have, great job, Yasha.