The Stickybomb Launcher bears resemblance to a weapon cut from Half-Life 2, simply named the "Sticky Launcher". Had it been included, it would have functioned in an almost identical manner, except that it would stick to enemies as well as map surfaces. Also, the Stickbomb Launcher was originally supposed to be the Pipebomb Launcher seen in Team Fortress Classic, but it was changed to the Stickybomb Launcher as the Pipebomb Launcher's only difference was that you could detonate the pipebombs with the alt fire key. The model remains in the game.