Oceanhorn is worth 400php and there is no such thing as ρrémíùm id, apple account na nag automatic buy ng mga apps is nka link ung apple id nila sa kanilang credit/debit card. I doubt walang magpapahiram sayo or should I say magbibigay sayo..
For your post to not become wasted, ask a friend to swipe their card to buy the game for you. Or someone you could ask to give you an itunes voucher.
Maybe you could go underground and have someone expert in carding to swipe it for you.
Lastly, jailbreak your phone so that you can install *****ed games and apps
Hopes that clears up..