Wow, that's a nice bargain on itch.io: the
downloadable Dreamcast, Windows, and PS1 variants of the Zia game all for only $10 USD! While I will always prefer the Dreamcast version of a game if there is one available, I must nonetheless say that getting your game to run on a PlayStation 1 is even more impressive considering that those consoles only have a grand total of 1 MiB of RAM!