While StarCraft II itself remains a gold standard for RTS gameplay, the "Preparing Game Data" phase is a in its modern infrastructure. It acts as a barrier to entry that requires manual troubleshooting—most notably language alignment and cache clearing—to bypass.
Outdated temporary files in the Blizzard folders can cause the launcher to "forget" it has already downloaded necessary data. starcraft 2 preparing game data
: Deleting the Bnet and Blizzard folders within %APPDATA% , %LOCALAPPDATA% , and %TEMP% is a standard "clean wipe" procedure to fix stalled data preparation. Final Verdict While StarCraft II itself remains a gold standard