Just simply click the red 'X' at the top right corner to exit out of the game and then click "Back" if you want to exit out of the "Games" section.
I think you have to wait for the add to go away for a second or 2 .. But be careful you have to be quick enough or you'll have to wait again
Aliens
the code that unlocks every lvl in math arcade is Lazy8
Karate champ
The Simpsons Arcade Game happened in 360.
Asterix - arcade game - happened in 1992.
Asterix - arcade game - was created in 1992.
Strider - arcade game - happened in 1989.
Blasto - arcade game - happened in 1978.
Superman - arcade game - was created in 1988.
Aquarium - arcade game - was created in 1996.
Aquarium - arcade game - happened in 1996.