Sure, here is a list for you. But there isn't much that is very good being released in December, do I've also done a list of recently released games so you can see what has just been released, as a lot of great games have just come out.
Here is a list of some of the best games released in the past few months:
Call of Duty 4 - Modern Warfare
Crysis (if and when anyone has a system able to run it, this is a much have game).
Unreal Tournament III
Football Manager 2008
Half-Life 2: The Orange Box
Championship Manager 2008
World of Warcraft: The Burning Crusade Expansion Pack
Supreme Commander: Forged Alliance (expansion pack)
Company of Heroes Gold Edition
Kane and Lynch: Dead Men
World of Warcraft: Battle Chest (worth getting just for the collecting aspect of it)
Need for Speed: ProStreet
PES 2008
Age of Empires III: The Asian Dynasties (expansion pack)
Civ IV: Complete edition
Gears of War
SimCity Societies (avoid, really bad game)
The Settlers VI: Rise of an Empire
Hellgate: London
The Witcher
Neverwinter Nights 2: Mask of the Betrayer (exp pack)
Colin McRaie: DiRT
Tom Clany's Ghost Recon: Advanced Warfighter 2
Bioshock
Medieval II: Total War - Kingdoms (exp pack)
FEAR - Perseus Mandate (standalone Expansion pack)
Company of Heroes: Opposing Fronts
Enemy Territory: Quake Wars
Empire Earth III
Tabula Rasa (great new Sci-Fi based MMO)
Painkiller: Overdose
Guild Wars: Eye of the North
Medal of Honor: Airborne (great game)
Race 07 (a good racing game)
World in Conflict (brilliant RTS)
Command and Conquer III (one of the best in the series so far)
Timeshift (nice FPS with time shifting abilities. pause time mid battle, steal all the enemies guns and shoot them with them, and then unfreeze time and watch them all fall, or slow time, shoot them all with exploding arrows, speed time back up and watch them all explode!)
And coming at the end of November and in December are:
Blacksite: Area 51 (big shooter based on the famous Area 51 arcade game)
Sudden Strike 3: Arms of Victory
Real Estate Empire
Stranger
Spaceforce: Captains (interesting looking space RTS)
Solider of Fortune: Payback
Juiced 2 (I've got the PS2 version, and while it is an OK racer it doesn't do much new, and the graphics are very bright and neon like, and very unrealistic. Quite a fun racer but also very easy if you have played a few racers in the past).
The Golden Compass
Galactiv Civilization
Rush to Berlin (nice RTS)
World of Chaos (RPG advanture, but I don't know much about it)
Heroes of Might and Magic: Complete Edition
Winter Challenge 2008
Frontlines: Fuel of War
Phantasy Star Universe: Ambition of the Illuminus
Psi-Ops: The Mindgate Conspiracy
The Suffering
Pirates of the Burning Sea (out just into Jan, this is meant to be a good pirate game).
Universe At War: Earth Assault
Aurora: The Secrets Within (interesting horror adventure game)
SunAge (this looks interesting. Sci-Fi based future setting post-apocalypse. fighting between three races)
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