But there's only one time payment on itch. You pay once and every future update is part of your payment. Also if you paid 20 (or smth) dollars on Patreon (even if that's 5 dollars during 4 months) and then you stop pledging the dev will send you all updates for the game when it reaches tier 1 release time (which usually means you have a bug free version).
In the dev's own words:
New update has been released already btw.
Edit:
Dev wrote earlier:
The options to get the updates [are]:
- 1 time payments on itch (around €15 for now)
- Option to subscribe to patreon and get the update (€5 in the first 2 weeks after release, €2 after that).
- Once patrons pledge at least €20, they will also be gifted an itch.io key, so they can get all the future updates even if they stop being a patron.
- Piracy, for free, once the games leaks here. The more popular the game becomes, the faster that should happen.
In the past, the game leaked here before I made it free anyway. So, anyone that can't/don't want to pay for the updates, shouldn't notice any difference. Just download it from here when it leaks.