ハーフライフ：ブルーシフト

Upload save file will orverwrite current progress and restart, do you wish to continue?

Welcome to playing retro Windows games in your browser! To ensure your game saves properly, please exit the game and wait for Windows to shut down completely. Make sure you see the "It is now safe to turn off your computer" message before using the save functions to avoid potential disk corruption.

To save disk changes made by the game, you must manually use the following save functions:
Save to cloud (Gold member only).
Save to local browser storage.
Save and download the save file.