Finn bets Jake that he can get the Crystal Eye and escape the dungeon in under 11 minutes (the average length of each episode).
The creatures in the dungeon are an homage to the creatures in the Dungeons and Dragons franchise. The treasure chest creature and the monster mouth door are Mimics. The Demon Cat is a reference to a Displacer Beast. The jelly cube is a reference to a Gelatinous Cube. The moving floor trap is a Trapper. The Guardian Angel is a reference to an Angel. The creature holding a laser pointer is possibly a Bugbear.