Something stopped your launch?
Walk through Java, game files, and mod compatibility.
Read guide →WISC / GUIDE
Install the launcher, choose a profile, and make sure Java matches your Minecraft version.
Use the Windows installer or portable ZIP. For a portable build, extract the entire archive before running Gr8Launcher.exe.
Set an offline username or sign in with an Ely.by account, the account options currently available in Wisc. Server access depends on the server’s authentication rules.
Use the Latest Release shortcut, or open Library → New Profile to choose a Minecraft version and Fabric, Forge, NeoForge, or Quilt. Keep each modded setup in its own instance.
In Options → Java, choose a compatible Java executable and a sensible RAM allocation. Keep an internet connection for the first installation. Once all required files are installed, offline launches are possible.
Java requirements vary by Minecraft release. Minecraft 1.20.5 and 1.21 commonly use Java 21, 1.18–1.20.4 use Java 17, and many older versions use Java 8. Check your exact game and loader requirements.
Install Git, Python 3.10+, and Java. On Linux or macOS:
git clone https://github.com/wisc-launcher/wisc.git
cd wisc
python3 -m venv .venv
.venv/bin/python -m pip install -r requirements.txt
.venv/bin/python main.pyOn Windows PowerShell:
py -3 -m venv .venv
.\.venv\Scripts\python.exe -m pip install -r requirements.txt
.\.venv\Scripts\python.exe main.pyWalk through Java, game files, and mod compatibility.
Read guide →Sign in with Ely.by for skin customization, and organize separate modded profiles.
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