A game set in the Unreal universe, only with a single-player storyline where the Skaarj or someone has invaded us, and the Tournament fighters are sent to the battlefield.
I had an idea for a cross between an RTS and an RPG. Basically, if an RPG boils down to creating a character with strengths and weaknesses whose abilities advance over time, then this game would replace "character" with faction. I discussed it with a friend of mine. We've already sketched out a basic backstory, five races, and an ability score system. Once we've finished our idea, we'll send it off to Bioware and THQ so they can make it. After further thought, maybe we should just send the idea off to Valve, so they can apply their cabal system to it.
I second the idea for Freelancer 2.
A third expansion for Age of Empires III. This expansion shall contain three things:
1. African civilizations. I'm thinking Zulu, Ethiopians, and someone from North Africa.
2. A revamp of the naval AI. The AOE III AI can do fine on the land, but they're hopeless at naval warfare.
3. A return of the older diplomacy systems, allowing players to change alliances in the game, or have more than two sides without a free-for-all.
Finally, I want a game in the Half-Life series where you play as Alyx Vance and can use that multitool she has.
Also, with the exception of the third AOE III expansion, I want all of these games to come out no sooner than Christmas 2009. That way they spend a good amount of time in development, and I'll have a better laptop by then so I can actually run these games. Damn Intel graphics card...
EDIT: Oops, I accidentally hit the "Report" button instead of "Edit". Moderators, please ignore this report.
Anyway, my latest idea is an FPS in which you get to use nuclear weapons at one point. And not the supposedly nuclear weapons like the Redeemer. Something like the Fury nuke from the Halo novels - it had a yield of a couple kilotons, and was the size of an overinflated football. I want to fire a missile at a target, see the mushroom cloud, then strap on my radiation suit and enter the three-mile-radius blast zone that I created. This should not be scripted - it should be the result of a physics engine doing its job. The way that I know they did this right is that the internet is ablaze with idiots complaining that they keep getting killed on the mission where you use nukes, not realizing that you have to get about ten miles away from the target before firing!