The Wii game beat out fellow best game nominees Call of Duty 4: Modern Warfare, Fable II, Fallout 3, Grand Theft Auto IV and Rock Band.
Activision and Infinity Ward's Call of Duty 4 won the most awards with three honors in the "Gameplay," "Story and Character" and public-voted "GAME Award."
Over 60K people placed their votes for the GAME Award.
Older games released in late 2007 such as Call of Duty 4 and Super Mario Galaxy were eligible due to a scheduling change that nixed the videogame BAFTA awards in 2008.
The winners of this year's videogame BAFTAs are listed below:
Best Game
SUPER MARIO GALAXY
Nintendo/Nintendo
Action and Adventure
FABLE II
Lionhead Studios/Microsoft Game Studios
Artistic Achievement
LITTLEBIGPLANET
Media Molecule & XDev Studio Europe /
Sony Computer Entertainment
Casual
BOOM BLOX
Electronic Arts LA/Electronic Arts
Gameplay
CALL OF DUTY 4: MODERN WARFARE
Infinity Ward/Activision
Handheld
PROFESSOR LAYTON AND THE CURIOUS VILLAGE
Level-5/Nintendo
Multiplayer
LEFT 4 DEAD
Valve/Valve
Original Score
DEAD SPACE
EA/EA
Sports
RACE DRIVER: GRID
Codemasters Studios/Codemasters
Strategy
SID MEIER’S CIVILIZATION REVOLUTION
Firaxis Games/2K Games
Story and Character
CALL OF DUTY 4: MODERN WARFARE
Infinity Ward/Activision
Technical Achievement
SPORE
Electronic Arts Montreal/Electronic Arts
Use of Audio
DEAD SPACE
Electronic Arts/Electronic Arts
BAFTA Ones to Watch Award
BORO-TORO
Adam Westwood, Graham Ranson, Yves Wheeler, Matthew Booton, Owen Schwehr (DarkMatter Designs)
GAME Award of 2008
CALL OF DUTY 4: MODERN WARFARE
Infinity Ward/Activision