You can't give away a game, you can gift games you own.
Hiiro, he said he can't gift me the game since he already has it. You just said he can gift games he already has. This is contradictory. No one said he could give away his game. The only way this could make sense is if you somehow thought I was asking if he could take away the rights to his game on Steam and transfer them to me, which I would never even consider a possibility.
It hurt my brain so much trying to figure out how to say the above. It's probably still wrong.