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Keitai World Launcher is built natively for Windows. If you’re on Linux you can try running it under Wine, but support is limited and some features may not work as expected.

Prerequisites: Before launching the application, please ensure the following components are installed:

• .NET Runtime: Requires the .NET 8.0 runtime.
• Java Runtime / Development Kit:
  • Recommended: JDK 8 Update 152 (Download JDK 8u152)
  • Supported (limited): JRE 8u152 — works, but STAR functionality is not available.
• C++ Runtime: Requires the latest Microsoft Visual C++ Redistributable (x64 recommended).