Mysterious Island that was released at Aug. 2015?
I bet nobody would like to save a copy of 1.0 version.
In fact, the earlier versions before 1.2 have too much bugs to play.
The replies under the original thread were mainly talking about those bugs and w11 updated many times just to fix them.
So I think v1.2 is a playable version of that game and has no differents on the gameplay with v1.0 beside of bugs.
Version 1.0 cannot be cleared properly (even if you can only play World 2-2), and there are many bugs, so it is not recommended to try! In fact, version 1.2 is the most suitable for playing.