We here got some HQ promotional material.
Edit: at the first sight, my remark wasn't too serious... but...
what about a xonotic trailer where you see something like: at the beginning, all started with... *tuba video (including the nasty tap-dancing alien. I love him) playing some official xonotic tune. Then, the game surprisingly evolved toward something like... *hardcore fragging*.
Might be a funny wink
Fat.bot.Slim