Backbone Entertainment
Backyard Software
Bad Elf Software
bam!
Barbie Software
BAT
Batovi Games Studio
Battlefront.com
Baudville
BC Soft Games
Beam Software
Beavis-Soft
Bedlam Games
Beenox
Beep Industries
Behaviour Interactive
Berserker Works
Bethesda Softworks
Beyond Software
Big Fish Games
Big Five Software
Big Huge Games
Big Idea
Big Time Games
Big Wig Media
Bignet
Binary Brotherz
Binary Systems
Binary Zoo
Bindweed Entertainment
Bioware
BiP Media
Bitbliss Studios
Bizarre Creations
Bizzare Creations
Black Element Software
Black Hammer Productions
Black Isle Studios
Black Lantern Studios
Black Ops
Black Rock Studio
Blake Co.
Blast! Software
Blazeware
Blitwise Productions
Blitz Games
Blizzard Entertainment
Blue Byte
Blue Chip Software
Blue Fang
Blue Gecko Entertainment
Blue Planet Software
Blue Sky
Blue Tea Games
Bluemoon
Bohemia Interactive Studio
Boiled Sweets
Bondarchuk V
Boonty
Breakaway Games
Brenner
Brighter CHILD
Brighter Minds
Brilliant Digital
Britannica Software
Broderbund
Brothersoft
Brute Force Programming
Buena Vista Games
Bulletproof Software
Bullfrog
Bungie Studios
Burger King
Buzz Monkey
BYTE
Byxon Games
Note: bolded names indicate companies that released a game within the last twelve months.