Interesting. Freehaven Station is a fun
And it has a neat subscription mechanism: You start off with 100 free “turns”, which in this game refers to significant player actions. You can explore the environment forever without using a turn, but if you want to take an action that pushes you forward in the game (such as entering combat or healing yourself), you have to pay a turn. You can buy another 100 turns for 50 cents using BitPass.