The first level is a tutorial. You will see a green enemy walking back and forth. Do not try to bonk it from the side—you will take damage. Instead, jump onto its head. You will hear the "bonk" sound, and the enemy will freeze or disappear. Collect the glowing gem it drops, find the locked door, and walk through.

is a cult-classic 2D platformer originally developed by 1 A.M. Productions in 1997 . Drawing inspiration from Mario Bros. , the game features two trolls, Grag and Thog, who must "bonk" the ground beneath enemies to stun them before knocking them off the screen. Ways to Play Online or Today