Next-Gen has charted the top 10 sellers in software for several categories, according to Amazon's sales data.  Halo 3 and The Orange Box are naturals for top spots, but another that hasn't even been released is racking up high rankings as well.

Overall, the best selling title across all platforms is The Orange Box (PC), which finally knocks Halo 3 out of the top spot. As far as the Xbox 360 is concerned, both are still at the top, but places are switched, with Halo 3 coming first. Activision's Call of Duty 4: Modern Warfare preorders are knocking at the back door, coming in at third place for the console.

We shouldn't be surprised at the pre-holidy preorder action, but Activision's Guitar Hero III is already taking many of the top spots, including the top two spots for PS2 (bundle and stand-alone game). It also manages to rank on every console's list that it is being released for: 8th for PS3, 4th for Wii, and 10th for Xbox 360. It looks like Activision is going to have great holiday sales numbers.

Many other highly anticipated games' preorders are also high ranking, with titles like Super Mario Galaxy, Assassin’s Creed, and Mass Effect sitting in top ten spots. 

See all of the lists after the jump. 

Overall:

01.   The Orange Box—EA (PC)
02.   Halo 3—Microsoft (Xbox 360)
03.   Brain Age 2: More Training in Minutes a Day—Nintendo (DS)
04.   The Legend of Zelda: Phantom Hourglass—Nintendo (DS)
05.   Super Mario Galaxy*—Nintendo (Wii)
06.   Brain Age—Nintendo (DS)
07.   Wii Play w/ Remote—Nintendo (Wii)
08.   Carnival Games—Global Star (Wii)
09.   The Orange Box—EA (Xbox 360)
10.   Harry Potter and the Order of the Poenix—EA (DS)

PC

01.   The Orange Box—EA
02.   World of Warcraft Expansion: Burning Crusade—Blizzard
03.   Nancy Drew: The Legend of the Crystal Skull—Her Interactive
04.   World of Warcraft—Blizzard
05.   Neverwinter Nights 2 Expansion: Mask of the Betrayer—Atari
06.   Hellgate London*—EA
07.   Age of Empires III Expansion: Age of Dynasties—Microsoft
08.   The Sims 2: Bon Voyage—EA
09.   Zoo Tycoon 2 Expansion: Extinct Animals—Microsoft
10.   The Sims 2 Deluxe—EA

Xbox 360

01.   Halo 3—Microsoft
02.   The Orange Box—EA
03.   Call of Duty 4: Modern Warfare*—Activision
04.   Guitar Hero III Bundle*—Activision
05.   BioShock—2K Games
06.   Assassin’s Creed*—Ubisoft
07.   Gears of War—Microsoft
08.   Mass Effect*—Microsoft
09.   Halo 3 Ltd. Edition—Microsoft
10.   Guitar Hero III*—Activision

Wii

01.   Super Mario Galaxy*—Nintendo
02.   Carnival Games—Global Star
03.   Wii Play w/ Remote—Nintendo
04.   Guitar Hero III Bundle*—Activision
05.   Dance Dance Revolution Hottest Party Bundle—Konami
06.   Mario Party 8—Nintendo
07.   High School Musical Sing It Bundle*—Buena Vista Games
08.   Game Party*—Midway
09.   The Legend of Zelda: Twilight Princess—Nintendo
10.   Super Smash Bros. Brawl*—Nintendo

PS3

01.   The Elder Scrolls IV: Oblivion—Bethesda
02.   Ratchet & Clank Future: Tools of Destruction— SCEA
03.   FIFA 08—EA
04.   Call of Duty 4: Modern Warfare*— Activision
05.   Assassin’s Creed*—Ubisoft
06.   Resistance: Fall of Man—SCEA
07.   Heavenly Sword—SCEA
08.   Guitar Hero III Bundle*—Activision
09.   The Elder Scrolls IV: Oblivion, Game of the Year Edition—Bethesda
10.   The Eye of Judgment w/ Camera—SCE

PS2

01.   Guitar Hero III*—Activision
02.   Guitar Hero III Bundle*—Activision
03.   Guitar Hero II Bundle—Activision
04.   Madden NFL 08—EA
05.   God of War—SCEA
06.   FIFA 08—EA
07.   Final Fantasy XII—Square Enix
08.   King of Fighters XI—SNK
09.   God of War II—SCEA
10.   Fire Pro Wrestling Returns—Agetec

DS

01.   The Legend of Zelda: Phantom Hourglass—Nintendo
02.   Brain Age 2: More Training in Minutes a Day—Nintendo
03.   Brain Age—Nintendo
04.   Harry Potter and the Order of the Phoenix—EA
05.   New Super Mario Bros.—Nintendo
06.   Flash Focus: Vision Training in Minutes a Day—Nintendo
07.   Pokemon Diamond—Nintendo
08.   Mario Kart—Nintendo
09.   Disney’s High School Musical: Making the Cut—Disney
10.   Drawn to Life—THQ

PSP

01.   Final Fantasy Tactics: War of the Lions—Square Enix
02.   Castlevania: The Dracula X Chronicles—Konami
03.   Star Wars Battlefront: Renegade Squadron—LucasArts
04.   Monster Hunter Freedom 2—Capcom
05.   Grand Theft Auto Liberty City Stories—Rockstar
06.   Tekken: Dark Resurrection—Namco
07.   Medal of Honor: Heroes—EA
08.   Metal Gear Solid: Potable Ops—Konami
09.   Jeanne D’arc—SCEA
10.   Star Wars Battlefront II—LucasArts