"Petit Island" is a very interesting independent exploration and adventure game. Currently, the only login platforms for this game are Steam and PS (the PS platform is only for display). If you want to play You only need to purchase and download it on the Steam platform.
Where to play on Pettit’s Island
Steam platform purchase link: https://store.steampowered.com/app/1744970/Petit_Island/.
PS platform link: https://store.playstation.com/zh-hans-hk/concept/10011299.