Anime & Manga
"A one-sided game is no fun, so I'll give you a hint."
— Yami Bakura, Yu-Gi-Oh!
Live-Action TV
The Doctor: I'll go first.
Donna: But he'll cheat.
The Doctor and the Toymaker: No!
The Toymaker: Shame.
The Doctor: That's the one thing he won't do.
Donna: But they're his cards. It's all tricks. Of course he'll cheat!
The Doctor: The only rules the Toymaker follows are the rules of the game. They bind his entire existence. I win or I lose, and that's it.
Video Games
Vergil: Defeating you like this has no meaning.
Dante: C'mon, Vergil. Let's do this!
Vergil: Heal your wounds, Dante. Get stronger. After that, we'll settle the matter.
"Three of them: the Snake, the Red Bird, the Cat. I think they started human, but it's hard to tell now. [...] But listen: if you ever end up there, know this. They play games, and they don't cheat. We only got out because the Cardsharp beat them at rummy."
— The Paronomastic Newshound, Fallen London
"That's it! This game is over. I've played by the rules so far. Okay, I confess! I was hoping Wonderboy would lose, but it was still a fair fight. C'mon, is that really so wrong?"