Picture this. Yu-gi-oh! more or less revolves around two people having a duel with fantasy themed monsters. I´m definitely in the lead, having had a fair share of luck at the beginning of the game, when all of a sudden I´m confronted by the Gradius ship!!!!
At first I figured it had to be a joke, until I realized that Konami are in fact heavily involved in the whole Yu-gi-Oh! distribution thing.
Shameless product placement.

--Michael