Grand Theft Auto III: The Definitive Edition file size on Xbox Series X|S, Xbox One, PC
Grand Theft Auto III: The Definitive Edition installs at 5.1 GB on Xbox Series X|S, 5.0 GB on Xbox One, 5.0 GB on PC. Sizes are read from the platform stores and dated, so you know how old the figure is before you clear space.
| Platform | Install size | Source | Last checked |
|---|---|---|---|
| Xbox Series X|S | 5.1 GB | Microsoft Store catalogue | Aug 28, 2026 |
| Xbox One | 5.0 GB | Microsoft Store catalogue | Aug 28, 2026 |
| PC | 5.0 GB | Steam store listing | Aug 28, 2026 |
What the Grand Theft Auto III: The Definitive Edition install size means in practice
The Xbox Series X|S version is the largest listed build of Grand Theft Auto III: The Definitive Edition at 5.1 GB. Store listings show the size of the installed package, not the download; the transfer itself is usually 10–30 % smaller because the package is compressed on the way and unpacked on the console. Patches are added on top of the listed figure, so a game that has been out for a year commonly sits a few gigabytes above the number on its store page.
Grand Theft Auto III: The Definitive Edition is developed by Grove Street Games and published by Rockstar Games. Genre: Shooter, Racing, Adventure. Platforms: PC, PS4, PS5, Switch, Xbox One, Xbox Series X|S.
Against the rest of the database, Grand Theft Auto III: The Definitive Edition at 5.1 GB sits below the average install of 43.2 GB across 446 games; 342 of them are larger. Within its genre the average is 44.7 GB, which puts Grand Theft Auto III: The Definitive Edition on the lighter side for a shooter of its generation. On a launch PS5 with 667 GB usable it takes 1 percent of the free space; on a 2 TB expansion drive about 0 percent. Deleting it frees exactly the listed figure plus any patches installed since the store listing was checked, and the saves stay.
To check several games against one drive, the storage planner uses the same figures. For the drive itself, the PS5 SSD checker lists which M.2 drives meet Sony's requirements.
Frequently asked questions
How many GB is Grand Theft Auto III: The Definitive Edition?
Grand Theft Auto III: The Definitive Edition takes 5.1 GB on Xbox Series X|S, 5.0 GB on Xbox One, 5.0 GB on PC. The figures are the install sizes shown on the platform stores, checked on Aug 28, 2026; day-one patches can add to them.
Why is Grand Theft Auto III: The Definitive Edition bigger on Xbox Series X|S than on Xbox One?
Each platform packages textures, audio and language files differently and uses its own compression. The Xbox Series X|S build lists 5.1 GB against 5.0 GB on Xbox One; the gap usually comes from higher-resolution asset packs and, on Xbox, the Series S assets bundled in the same download.
Will Grand Theft Auto III: The Definitive Edition fit on a PS5 with the stock 825 GB drive?
A launch PS5 has about 667 GB of usable space. At 5.1 GB, Grand Theft Auto III: The Definitive Edition fits 130 times over — in practice you can keep it installed alongside roughly 11 other games of average size before space runs out.
Is the Grand Theft Auto III: The Definitive Edition file size the download size or the installed size?
The database lists the installed size the store shows before you download. The transferred download is often smaller because packages are compressed in transit; the installed figure is the one that matters for free space.