Even Magic has Standard Tournaments, Double headed Giant, Sealed Deck, Booster Draft, Elder Dragon Hinterland, Commander, Emperor, Multiplayer.
True, but the basic gameplay doesn't change drastically in those formats, at least not as far as I know. You're still trying to get the other guy to zero life points.
The rules don't change but the games play very different. Being limited to only wave 8 and 9 ships and upgrades and playing ships or upgrades from any wave (Standard/Modern) are going to be very different experiences despite the other rules being the same.