The objective of the "Gun Mayhem" game which has lots of guns and several tactics in, defeat your friend or bots as soon as possible. You can play in "Campaign" mode or "Custom Game" mode that you can assign selections however you want. Game can be played 1 to 4 players. In 2 player game mode, 1st Player uses "Arrow Keys" and "[,=" keys, 2nd Player uses "W,A,S,D" keys and "T,Y" keys to play. You can design your character when you select "Campaign" mode and after you choose the chapter. In this mode, you will fight against to bots with your friend together and objectives will be getting harder when you complete the chapters one by one. You can use "Space" key to pause the game to have a break in this action game of Twoplayergames.org portal. If 3rd and 4th players want to join the game, you can learn key combinations from "Options" section. You can see and test all weapons from "Gun Library" section. Let the fight begin in arena!