
Open-source programmable team rotation simulator and DPS calculation engine.
0 playing nowFor Genshin Impact
Frame-accurate combat engine simulating team rotations, energy particles, and elemental gauge theory.
gcsim (Genshin Combat Simulator) is a community add-on for Genshin Impact. The competitive standard for theorycrafting rotation efficiency and DPS benchmarks. Run simulation configs or explore verified rotation scripts through the gcsim desktop tool. Mods are versioned separately from the base game — match the recommended engine or client release before joining multiplayer, and keep a clean backup of your settings if you experiment with several packs at once. PlayBound only lists projects that publish redistributable archives or clear external download pages. Always read the upstream README for credits, required assets, and known incompatibilities.
Compatibility: Windows, Linux, macOS
Install with the PlayBound Launcher
The launcher installs this into tools/gcsim/ for Genshin Impact. If the base game is missing, it will install that first.
Install Genshin Impact first if you have not already — gcsim (Genshin Combat Simulator) is an add-on and needs the base game.
The quickest route is the PlayBound Launcher: open Genshin Impact, find gcsim (Genshin Combat Simulator) in its mods list and press Install. The launcher downloads the official release and places it in the right folder for you.
To install it by hand, download the latest release archive from github.com/genshinsim/gcsim/releases.
Extract the archive into the "tools/gcsim" folder inside your Genshin Impact installation directory.
Start Genshin Impact and enable gcsim (Genshin Combat Simulator) from the in-game mods or add-ons menu. The download is roughly 40 MB.
Yes. gcsim (Genshin Combat Simulator) is released under Open Source / MIT and costs nothing. Neither it nor Genshin Impact has any paid content.
Genshin Impact, which is itself free. gcsim (Genshin Combat Simulator) is an add-on and will not run standalone.
The PlayBound Launcher installs it in one click from Genshin Impact's mods list. You can also install it by hand — full steps are on this page.
Roughly 40 MB, on top of the base Genshin Impact installation.
Yes. The source is published at github.com/genshinsim/gcsim under Open Source / MIT.