Recited from memory by: The Thinker
The author writes:
Yes that is the Soldier from Team Fortress 2 rocket jumping over the goombas from Super Mario Bros on the planet Tatooine whilst being chased by a World of Warcraft ogre. Yes that suspicious looking hedge in the background is indeed a creeper from Minecraft, and yes, those are the UFOs from SimCity floating up in the sky.
Believe me, that's not the end of it, see what other VG characters and objects you find in today's strip! Sometimes I don't think this comic has enough gratuitous and unnecessary video game references.
I have no life...