What's your dream game?

[IIIIITHE1IIIII]

That would be F-Zero HD with 30-player online modes.


As for ideas from the ground up, I would also go for a survival horror title. Though multiplayer based:

A large map is selected. 64 players and/or bots (or more if technology would support it.) start on different locations; some in 2-4 groups, and some start alone. On each level random houses will be selected as supply houses each time you choose them (so that you won't be able to memorize which houses contains critical equipment), and the goal is simply to survive.

Hordes of zombies are scattered throughout the map. Though they can't respawn, staying in an area with relatively few zombie also means food and water is limited, so you will be forced to find new supply houses when you can't hold out any longer. If you are bitten by a zombie you have one minute to find a cure in a supply house or get one from a teammate (who would possibly rather keep it for himself in case he gets bitten), if not, you'll become your teammates' next victim.

While teaming up with many of the other players can prove beneficial in combat, it can be very difficult due to the size of the map, and because it also means that food, water, antidote and ammo found in each safe house will be less rewarding per person. It also means that the high amount of footsteps will be easier to hear from a distance.

At dawn a rescue helicopter will start flying around the map. If you shoot a flare (also found in certain supply houses), it is much easier for the helicopter to acknowledge your position and pick you and your surviving teammates up. After a few in-game hours the helicopter gives up searching for survivors, and those still (camping/hiding? ) on the map will lose the game.