Angry Birds: Captain Underpants/Captain Underpants and the all-out aggressive assault with the Angry Birds

this game is a fanmade crossover between Angry Birds and Captain Underpants

Smart Pig Gas
George and Harold were signing up for Jerome Horwoods Elementry's egg contest, they had to see how fast they could hatch an egg, when suddenly BAM, the pigs crash with one of their weird machines they built to get a map, and the pigs are working with smartsy fartsy, the pig and the fart steal the egg, but the angry birds slingshotted too far and crashed into the school, now they can help George, Harold and their other friends to get their eggs back

we have the evil toilet that are invading the city
The birds have teamed up with Jerome Horwoods Elementry students, but this time with terence, bubbles and Strip (new bird). they now have to defeat The Turbo-Toilet 2000 and it's minions, and also the pigs.

Origin Issue
after episodes 1 and 2, they make an alternate universe version of the captain underpants origin issue, and added the angry birds to it