Alright, I'm sorry if it sounded too aggressive, but you really shouldn't add copyrighted stuff to stuff you own, mainly if you are going to publish it, if it's either student project or a creation of your own,free or not. I rather recommend putting there screenshots of the game, and also to the portfolio, because like... portfolio is stuff you're doing, not other stuff. Also ( and now I don't mean it as threatening, more like as a "friendly" warning) you could get into trouble with legal stuff if you'll do this again. So now:
- Remove every single copyrighted thing you have on the game page, portfolio, and the game itself. (yes, every single one)
- Change it for screenshots of the game (players want to see the game itself, and from my own personal experience they won't play a game if they can't see what it looks like)