Upgrade your setup from version 7 to 10 while retaining your current files and data.
Upgrade your setup from version 7 to 10 while retaining your current files and data.
You'd keep your installed games, but they'll likely move into a Windows 10 legacy folder.
I wouldn't rely on the technical preview—it remains quite unstable and isn't suitable for daily use. Keep going with Windows 7 until the official release. (No promises if you try the technical preview.)