| AllSeeingGoggles | Developer | |
| Allan Bays | Developer | |
| Allan Xia | Developer | |
| Allen Merrell & Eric Knopp | Developer | |
| Allen Roldan | Developer | |
| Allenapollo | Developer | |
| Alliance | DeveloperPublisher | |
| Alliance Digital Media | DeveloperPublisher | |
| Alliance Software | Publisher | |
| AllicGator | Developer | |
| Allicorn | Developer | |
| Allie A | Developer | |
| AllieMackie | Developer | |
| Allied Leisure | Publisher | |
| Allied Leisure Industries | Publisher | |
| Allied Leisure Industries, Inc. | Publisher | |
| Alligata | DeveloperPublisher | |
| Alligata Software | DeveloperPublisher | |
| Alligator Ventures | Developer | |
| Alligrater | Developer | |
| Allison Salmon | Developer | |
| Allison Vansickle | Developer | |
| Allison Weiss | Developer | |
| Allister Brimble | Developer | |
| Allods Team | Developer | |
| Alloy Games | Developer | |
| Allshar | Developer | |
| Allumer | DeveloperPublisher | |
| Allumer / | Publisher | |
| AllyJamy | Developer | |
| Allyofjustice | Developer | |
| Allyson | Developer | |
| Almanic | Developer | |
| Almanic Corp. | Developer | |
| Almathera Systems | DeveloperPublisher | |
| AlmerDev.indo | Developer | |
| Almighty Games | Developer | |
| Almighty Tuna | Developer | |
| Almightyzentaco | Developer | |
| Almost Developer | Developer | |
| Almost Panda Games | Developer | |
| AlmostAwesome | Developer | |
| AlmostCthulhu | Developer | |
| AlmostLunch | Developer | |
| Aloe Guvner | Developer | |
| Aloe Vertex | Developer | |
| Aloe and Cal | Developer | |
| Alon Tzarafi | Developer | |
| Alon1525 | Developer | |
| Aloname | Developer | |
| Alone | Developer | |
| AlonellyFox | Developer | |
| Alonzu | Developer | |
| Alpaca Space Lab | Developer | |
| Alpaca World | Developer | |
| AlpacaLunch | Developer | |
| Alpacalypse Studios | Developer | |
| Alpacka | Developer | |
| Alpaloo | Developer | |
| Alpasyon007 | Developer | |
| Alpear | Developer | |
| Alpha | DeveloperPublisher | |
| Alpha Aventuras | Developer | |
| Alpha Chrome Yayo | Developer | |
| Alpha Denshi | DeveloperPublisher | |
| Alpha Dream | Developer | |
| Alpha Helix | DeveloperPublisher | |
| Alpha Omega Software | Publisher | |
| Alpha Strike Games Limited | Developer | |
| Alpha Toaster | Developer | |
| Alpha Unit | DeveloperPublisher | |
| Alpha-Beta | Developer | |
| AlphaDio Production | Developer | |
| AlphaDream | Developer | |
| AlphaPro Studio | Developer | |
| Alphastar | Publisher | |
| Alphawing Games | DeveloperPublisher | |
| Alpheo | Developer | |
| Alpheratz | Developer | |
| Alpi Games | Developer | |
| Alpine Arts | Developer | |
| Alpine Software | Developer | |
| Alpine Studios | Developer | |
| Alpine Studios, Inc. | Developer | |
| Alpino | Developer | |
| Alrecenk | Developer | |
| Alryan Shaheen | Developer | |
| Alsatian Studio | Developer | |
| Alsharefee | Developer | |
| Alszerjo | Developer | |
| Alt1 | DeveloperPublisher | |
| AltSpaceGames | Developer | |
| Altabestudio | Developer | |
| Altacia | DeveloperPublisher | |
| Altair Works | Developer | |
| Altairworks | Developer | |
| Altar Games | Developer | |
| Altar Interactive | Developer | |
| Altari Games | Developer | |
| Alter Ego Studios | Developer | |
| Altered Matter | DeveloperPublisher | |
| Alterego Games | Developer | |
| Altergaze | Developer | |
| Alterisateur | Developer | |
| Alternative Software | DeveloperPublisher | |
| Alternative Software Ltd. | Publisher | |
| AltezaTFE | Developer | |
| Althi | DeveloperPublisher | |
| Altron | DeveloperPublisher | |
| Altron (JP) | Publisher | |
| Altron JP | Publisher | |
| AltronJP | Publisher | |
| Alucine Soft | Developer | |
| Alucine Software (Francisco Javier Perez Aguilera, Ricardo Perez Aguilera, Armando Garcia) | Developer | |
| Alukard9112 | Developer | |
| Alvar0gamer | Developer | |
| Alvaro Caceres | Developer | |
| Alvaro Luque | Developer | |
| Alvaro Marco | Developer | |
| Alvaro Mateos Herrera | Developer | |
| Alvaro Perez | Developer | |
| AlvaroVilla | Developer | |
| Alvarop | Developer | |
| Alvarop Games | Developer | |
| Alventia | Developer | |
| Alvian Eka | Developer | |
| Alvion | DeveloperPublisher | |
| Alyssa Williams | Developer | |
| AlyssonMax | Developer | |
| Alyx Jones | Developer | |
| Alzhar | Developer | |
| Am.Hyde | Developer | |
| Amaia Ruiz | Developer | |
| Amaka94 | Developer | |
| Amalie Kae | Developer | |
| Aman | Developer | |
| Amanda | Developer | |
| Amanda Hackbardt | Developer | |
| AmandaColer | Developer | |
| Amandhe | Developer | |
| Amanita Design | DeveloperPublisher | |
| Amaranthine | Developer | |
| Amarikwa | Developer | |
| Amaweks | Developer | |
| Amaze | Developer | |
| Amaze Entertainment | Developer | |
| AmazengGrace | Developer | |
| Amazing | DeveloperPublisher | |
| Amazing Games | Developer | |
| Amazing Media | Developer | |