| Bethesda Softworks |
| Big Ape Productions |
| Big City Games |
| Big Fish Games |
| Big Huge Games |
| Bigbig Studios |
| BigPark |
| Bionic Games |
| BioWare |
| bitComposer Games |
| Bitmap Brothers |
| Bits Studios |
| Bizarre Creations |
| Black Cactus |
| Black Element |
| Black Hole Games |
| Black Isle Studios |
| Black Lantern Studios |
| Black Market Games |
| Black Ops Entertainment |
| Black Rock Studio |
| Black Sea Studios |
| Blazing Lizard |
| Blendo Games |
| Blitz Games |
| Blizzard Entertainment |
| Blue 52 |
| Blue Byte |
| Blue Castle Games |
| Blue Fang Games |
| Blue Isle Studios |
| Blue Omega Entertainment |
| Blue Planet Software |
| Blue Shift |
| Blue Tongue |
| Bluepoint Games |
| Blueside |
| Bohemia Interactive Studio |
| Bold Games |
| Bongfish GmbH |
| Born Ready Games |
| Brain in a Jar |
| Brainbox Games |
| BrainGame Publishing |
| Brash Entertainment |
| BreakAway Games |
| Breakthrough New |
| Budcat Creations |
| Buena Vista |
| BugBear Entertainment |
| Buka Entertainment |
| Bulkypix |
| Bullfrog Productions |
| Bungie Studios |
| Bunkasha Publishing |
| Burut Software |
| Cadenza Interactive |
| Camelot Software Planning |
| Candygun Games |
| Capcom |
