Henry Stickmin 4: Infiltrating the Airship is a storybook-like Flashgame with gameplay elements borrowed from other games and fourth game in the Henry Stickmin series. Henry Stickmin has been captured by a secret department of the US Government and is forced to take down the Toppat Clan in exchange for all charges against him for the crimes he committed in the previous game dropped. To do this, he must infiltrate the Toppat Clan's airship and literally bring it down. Of course, there are many ways this could end.

Spikestuff gets all the good endings in this game as fast as possible with the help of a few glitches that make it so they don't have to replay the game in full to get some of the good endings.