Ayee, fair, It's stated in the Patreon page. a few remarks though:
- This game's page currently has no direct link to said patreon (prolly a good idea to include it here)
- Your profile also has no link to Patreon (here would also be fine I suppose, but preferably both spots)
- In your main website, it is indeed stated that it is a subscription, but nowhere directly stated outright that you LOSE access to the game once the sub is up.
As I said before, due to the unusual format - - in a dev-player environment where people are used to keeping what they paid for (even in subscription formats), I feel like it's something you gotta make sure to inform people as explicitly as possible. If it stays sparse/vague like this it's too easy for someone to glance over and feel deceived.