Expose more Greenworks Steam cloud APIs to NW.Js and Electron (1.11.0: Supports Greenworks v0.18.0 for NW.Js v0.92.0, Steamworks SDK 1.60).
There are no purchasing options in the greenworks JS library this is based on. There are some ACEs for checking for DLC. See the ACEs available here: construct.net/en/make-games/addons/244/greengrinds/aces