It's 2099 A.D. yet corruption is more present than ever. Government opression has merged with corporate domination. You are a lone rebel ready to take it all down! Are you prepared to create total havoc and mass mayhem? Get ready for futuristic weapons, sophisticated offense tactics and a killer mech! Complete mission objectives, upgrade your weapons and have some bloody fun.rnrnSet in the future 2099 A.D. there is even more Government opression and corporate domination. But you can take them all down with Mass Mayhem!rnrnGame controls:rnrnArrow keys to move and aim.rnSpacebar to equip and use weapons or 1 to 9.rnX to interact.rnJ to equip jet pack, up key to use.