Well that's because i didn't interact with them either. All i did the entire game was mana ramp. They were beating each other up because they all had creatures in play.
Yeah, but they let you ramp AND have Riku in play for two whole turns. If you also had cards in hand, that's just silly.
If a Riku player has been doing nothing all game but ramp, that to me is a pretty good reason to smack him around a bit... if nothing else blow up the Doubling Cube. Great googly-moogly.