Why is Unturned on ps5 is not free to play?

[moa8th]

wanna know why Unturned on ps5 is not free.

[Waryth]

because porting them on other platform doesn't come free but with a fee.

You're new to this ordeal. Not everything is consistent. Among Us is free-to-play on mobile but the PC version is a paid version as an example.

If any games are consistent with their games in all kinds of platform then you should be thankful and grateful how they have resources and funding to maintain consistency in multiple platforms.