| .B | Rockstar Games | Ficheiros de Jogo | Grand Theft Auto 3 Saved Game File | Grand Theft Auto III | Rockstar Games |
| .CLI | Rockstar Games | Ficheiros de Jogo | Grand Theft Auto Clip Data File | Grand Theft Auto IV | Rockstar Games |
| .CLIP | CELSYS | Ficheiros de Imagem Raster | Clip Studio Format File | Grand Theft Auto V | Rockstar Games |
| .CM | Rockstar Games | Ficheiros de Jogo | CLEO Custom Mission | Grand Theft Auto: San Andreas | Rockstar Games |
| .COL | Open Source | Ficheiros de Dados | Bibexcel File | Grand Theft Auto III | Rockstar Games |
| .FXT | Rockstar Games | Ficheiros de Jogo | Grand Theft Auto Fake Text File | Grand Theft Auto: San Andreas | Rockstar Games |
| .GMP | Blue Marble Geographics | Ficheiros de Dados | Global Mapper Package File | Grand Theft Auto III | Rockstar Games |
| .GXT | Rockstar Games | Ficheiros de Configurações | Grand Theft Auto Text File | Grand Theft Auto III | Rockstar Games |
| .IDE | Rockstar Games | Ficheiros de Jogo | GTA Item Definition File | Grand Theft Auto IV | Rockstar Games |
| .IFP | Rockstar Games | Ficheiros de Jogo | GTA Animation File | Grand Theft Auto IV | Rockstar Games |
| .IMG | Unknown Developer | Ficheiros de Imagem de Disco | Disk Image Data File | Grand Theft Auto IV | Rockstar Games |
| .IPL | Rockstar Games | Ficheiros de Jogo | GTA Item Placement File | Grand Theft Auto III | Rockstar Games |
| .KF2 | Rockstar Games | Ficheiros de Jogo | Max Payne Resource File | Rockstar Games Max Payne | Rockstar Games |
| .KFS | Rockstar Games | Ficheiros de Jogo | Max Payne Model File | Rockstar Games Max Payne | Rockstar Games |
| .LDB | Microsoft Corporation | Ficheiros de Layout de Página | Microsoft Access Lock File | Rockstar Games Max Payne | Rockstar Games |
| .MP2M | Rockstar Games | Ficheiros de Jogo | Max Payne 2 Mod File | Rockstar Games Max Payne | Rockstar Games |
| .MP2S | Rockstar Games | Ficheiros de Jogo | Max Payne 2 Saved Game | Rockstar Games Max Payne | Rockstar Games |
| .MPM | Rockstar Games | Ficheiros de Jogo | Max Payne Modification File | Rockstar Games Max Payne | Rockstar Games |
| .MPS | IBM | Ficheiros de Dados | Mathematical Programming System File | Rockstar Games Max Payne | Rockstar Games |
| .RAS | Remedy Entertainment | Ficheiros de Jogo | Remedy Archive System File | Rockstar Games Max Payne | Rockstar Games |
| .REP | Rockstar Games | Ficheiros de Jogo | Grand Theft Auto Replay File | Grand Theft Auto III | Rockstar Games |
| .RPF | Rockstar Games | Ficheiros de Jogo | Grand Theft Auto Data File | Grand Theft Auto IV | Rockstar Games |
| .SCM | Gimpel Software | Ficheiros Plugin | GIMP Script-Fu Script | Grand Theft Auto III | Rockstar Games |
| .SDT | Intuit, Inc. | Ficheiros de Dados | QuickBooks Data File | Grand Theft Auto III | Rockstar Games |
| .SKD | Rockstar Games | Ficheiros de Jogo | Max Payne Skin Data File | Rockstar Games Max Payne | Rockstar Games |
| .WD2 | Rockstar Games | Ficheiros de Jogo | American Idol Data | American Idol | Rockstar Games |
| .WFT | Rockstar Games | Ficheiros de Jogo | GTA 4 Car Model File | Grand Theft Auto IV | Rockstar Games |
| .WPL | Microsoft Corporation | Ficheiros de Vídeo | Windows Media Player Playlist | Grand Theft Auto IV | Rockstar Games |
| .YPT | Rockstar Games | Ficheiros de Imagem 3D | GTA 5 Particle Data | Grand Theft Auto (GTA) | Rockstar Games |
| .YTD | Rockstar Games | Ficheiros de Jogo | Grand Theft Auto 5 Texture File | Grand Theft Auto V | Rockstar Games |
| .ZON | Nuance | Ficheiros de Configurações | OmniPage Zone Template File | Grand Theft Auto IV | Rockstar Games |
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