Hi. Currently with 5.50 you unlock everything except the "horse" part which concerns 2 minigames, one in CG and the other in pixel art. With the wolf tier, the minigames you can make the most of are 4 (normal) + 2 (wolf) in total.
Maybe it seems complicated but the good news is that I will make each minigame free as I progress with development. In practice, you can choose whether to pay and immediately unlock all the erotic content, or play and unlock them as you progress through the story.
Only some minor tools, and the HD versions of the animations will remain exclusively for payment ^.^