The Jack 'O Lantern Launcher is a gun dropped by Pumpking during the Pumpkin Moon event. It uses Explosive Jack 'O Lanterns, which are purchased from the Arms Dealer for 15 Copper Coins provided the player has the Jack 'O Lantern Launcher in their inventory. The Explosive Jack 'O Lanterns fired will bounce around and explode naturally after some time or automatically when it hits a enemy. The Explosive Jack 'O Lanterns firing pattern does not follow known laws of physics as the Grenade Launcher does. The Jack 'O Lantern Launcher receives rocket bonuses when used with the Shroomite Helmet, despite launching Explosive Jack 'O Lanterns.
- The explosions will not destroy blocks or hit the player.
- Added to the game.