Use the official version if you want endless new content and leaderboards. Use Rolling Sky Remake 04b Portable if you want a distraction-free, offline, classic experience that you can play on a school laptop or office PC without installing anything.
: Improved background quality, image effects, and new theme types like "Candy" and "Deep Space". rolling sky remake 04b download portable
To help you decide if this portable version is right for you, here is a head-to-head comparison. Use the official version if you want endless