for Tekken 5 DR How it works

How it works

Project Backdash is our build of RPCS3, the free and open-source PS3 emulator, with rollback netplay added for Tekken 5 Dark Resurrection, and a launcher that sets it all up. You bring the game. Windows only, and free.

Three parts

  1. The emulator

    A modified RPCS3: upstream commit 028d1e8f4a42 plus our netplay changes, under the GNU GPL version 2. The netplay code works in memory while the game runs, so your game files are never changed.

  2. Your game

    Your own copy of Tekken 5: Dark Resurrection Online (PS3, NPUB30009): its .pkg file or game folder, with the matching .rap licence. We provide no game files, licence files or keys. Other regional releases are not supported.

    Check the game and licence requirements.

  3. The launcher

    It checks your PC, installs your files, downloads the system software (PS3UPDAT.PUP) from its publisher's update server, and prepares the game behind a progress bar. One setup, then you play from its menu.

Rollback

Each PC plays your inputs without waiting for your opponent's, and predicts theirs. When a real input arrives that differs from the prediction, the game restores a saved state and re-simulates the frames in between. Both PCs compare the game state every frame and stop the match if they ever disagree.

Input delay is chosen automatically from the measured connection. You can change it in Settings → Game → Online feel.

The fight runs directly between the two PCs, or through a relay when a direct connection cannot be made. On a direct connection your opponent sees your IP address.

Your PC

System
Windows 10 or 11, 64-bit, Intel or AMD
Memory
8 GB; 16 GB recommended
Graphics
Vulkan-capable, current driver
Processor
With AVX2 and 4 threads: Intel Core 4th generation or AMD Ryzen, or newer
Disk
8 GB free for setup; 12 GB is safer