A work-in-progress free and open-source replacement for the Diablo I engine. Simply import the Diablo assets, and enjoy the same old game with faster performance and modern resolutions, and first class support for mods.
A work-in-progress free and open-source replacement for the Diablo I engine. Simply import the Diablo assets, and enjoy the same old game with faster performance and modern resolutions, and first class support for mods.
We love Blizzard's popular game, Diablo. We love it so much, in fact, that we're willing to spend our precious time developing a free and open source solution for those wanting to play it on a modern computer.
Short answer, yes. We don't distribute any copyrighted game assets, which means you'll need to have a copy of Diablo to be able to play.
| Method | Space Saved | Risk | | :--- | :--- | :--- | | | ~200 MB | None (game skips to menu) | | Delete unused language audio files | 5–8 GB | Medium (some radio lines may be silent) | | Delete Rockstar Launcher cache | 1–3 GB | None (recreated on launch) | | Disable texture pack (if optional) | 4–7 GB | Low (game uses lower-res textures) | | Use CompactGUI or NTFS compression | 10–20% | Medium (may increase CPU load) | ❌ Do NOT delete: .rpf archives, x64 folders, update folder, or GTAV.exe – game will crash or fail to verify. 6. Comparison to Other Open World Games (2024–2025) | Game | Install Size | Graphics Quality | | :--- | :--- | :--- | | GTA V (PC) | ~90 GB | High (2015-era) | | Red Dead Redemption 2 | ~115 GB | Very High | | Cyberpunk 2077 (w/ Phantom Liberty) | ~85 GB | Ultra + RT | | Microsoft Flight Simulator (base) | ~150 GB | Extreme | | Call of Duty: Modern Warfare III | ~200 GB | High | | The Witcher 3 (Complete) | ~50 GB | Medium-High | | Forza Horizon 5 | ~110 GB | Very High |