I'm gonna do Missile Survival and GTA Free Mode.
I've been brainstorming lately and I have a few ideas, and I'd like to know if any of these sound fun. I'm probably going to run the one that wins the vote.
Bullring - Two Teams, Drivers and Survivors. The amount of Drivers is dependent on the overall playercount. Drivers get in jeeps and try to run over the Survivors. Survivors win by lasting for maybe 3-5 minutes. Drivers win by killing everyone.
Missile Survival - Red Team gets to fly the Missile Vehicle, and Blue is a good distance away on the ground. The Blues are given Rifles and AA turrets. The red team has to fly the missile into the Blue's base, while avoiding fire from the Blues.
Warsport - No teams, FFA. In this the objective is to get 20 kills in 7 minutes. However this is in a large arena, and upon getting a kill there is a 1/3 chance for the crow to cheer, and if I got around to it maybe a 1/8 chance for an announcer to say something. Alongside that, there probably wouldn't be a class selection system. I'd simply spawn a player with an SMG, Pistol, and two grenades. Better weapons would be placed throughout the map.
Rocket Tennis - Two teams of 5 are put into a room where they're only given deflectors. A Gravity Rocket then spawns towards a random team to start. For a team to score a point they must get the rocket into the other teams goal or kill one of the players on the other team. Been Done.
GTA Free Mode - This one would take longer but hopefully it'd be worth it. Players spawn in a large city with Cars around the city. People can do whatever they please in the city so long as its allowed by the rules. What might make this fun though is that through some simple eventing the car is random. Cars can either be either "Normal", "Sporty" or "Special". Normal cars are things like Sedans and Soccer Mom vans, these have a decent chance of spawning. Sporty vehicles fall under things like the Turismo or the Sport Motorcycle, these have a lesser chance of spawning.. Special Vehicles are rare and have a 1/64 chance in spawning. These are things like Helicopters and Monster Trucks.