Where were the tyranids during the old warhammer days?

[Ninjadeadbeard]

The theory goes something like this. At some point, during the events of the 41st or the 42nd or perhaps even approaching the 50th Millenium, Chaos is victorious. The forces of order and reason are overwhelmed, the Imperium of Man succumbs and all of the galaxy and perhaps creation is corrupted by the taint of Chaos. The galaxy is left in a perpetual state of absolute chaos, and the warp envelops real space completely. The Chaos gods sit back, satisfied and content and . . .

Heresy! Heresy! Purge the Unclean!

Actually I'm pretty sure the Tyranids were all just playing MTG.