Where possible, Boosteroid uses the cloud saves (cloud synchronization) of game platforms such as Steam and EA app. For this to work, you must exit the game properly: quit it using the in-game exit button, wait for the desktop to appear, and only then end the session.
In the Steam, Epic Games, and EA app launchers, make sure cloud synchronization is enabled (it usually is by default). This video shows how to enable cloud saves for a specific game:
You can find all the details about Steam Cloud saves in a separate article.
How to start synchronization manually
Steam: before launching the game from the library, click the cloud button.
Epic Games: after closing the game, go to the library and find the game you want to sync. Click the three dots under the game icon, select Manage, and choose the action you need.
If a Cloud Sync Conflict appears, always choose the first option, Download to this machine, regardless of which save is marked as newer.
Not all games support cloud synchronization. For example, demo and trial versions don’t support it.
For games without cloud save support, Boosteroid stores your game data itself and restores it at the start of your next session.