You will require Steam overlay for any purchases from the ingame Store of Creativerse. 9 What to do if OverlayUI.exe is corrupted.8 Official Steam support for Steam Overlay.7 Programs/applications known to interfere with Steam Overlay.6 Anti-virus software and/or firewalls might block Steam Overlay.5 Running Steam Overlay and Steam as an admin (not Creativerse though).4 Changing the key settings for Steam Overlay.3 Enabling Steam Overlay for Creativerse.2 What to do if Steam Overlay does not work as intended.