WINDOWS PC DEMO DOWNLOAD WITH AUTO UPDATES. NOTE:This is a beta demo and contains auto updates which can cause issues with some virus protection software. If you encounter problems please try the file below.. WINDOWS PC DEMO DOWNLOAD WITHOUT AUTO UPDATES. “Auto updates” means that your version of Okinawa rush will be automatically updated when you run the game ensuring you have the most recent build. For those who use the second option; we will add a notice on the front page when there is a new build to download and re-install.