Hii sorry, it's my first time buying games..
So do I have to buy it from here in order to get the steam key or i still can get it even if I buy it from steam?
Steam keys are just a way to get a game from Steam without needing to go through the purchase process directly on Steam. If you'd prefer to play OBSCURA on Steam, I'd recommend buying it there to reduce the potential for complications. The only exception is for people in Germany and China; OBSCURA is blocked for sale on Steam in those countries, so you'd have to buy the game on itch.io.