"The Spoke Rider Playing cards banner that is located in the game
This banner was created by me as a community challenge thought of by the devs prior to the games beta stage that was being held

The banner itself holds many jokes and quirky things

-The naming of "Underworld" implies descending which you do in this game
-Fictional playing card ad due to its real life tie in with the playing card brand Bicycle (guess what you do in this game)
-Spoke rider points to kids using playing cards inbetween their spokes to make it sound like motocycles
-The ace of diamonds graphic is a nod to the descenders logo
-The skeleton king of spades ties in with a spooky underworld theme (the rock crown implies crashing alot, which people do ingame >_>)

"