The warning message "If you uninstall the iWin Games Manager then any games you have downloaded will no longer be playable. "Are you sure you want to do this?" is a little confusing. It is true that you lose the ability to launch the games with the ease of the manager but uninstalling the manager does not remove the games on your machine, if the installation pathway you originally selected for their installation is not within the iWin Games Manager folder itself. When you reinstall your iWin Games Manager, your installed games should repopulate.
Should you need to uninstall any games (old trial games, etc.), you will need to do so individually (For best results we recommend completing all uninstallation procedures through the iWin Games Manager).