I wouldn't say that the two versions of VF2 are supposed to be different; it just turned out that way. When the PC version was released a few months after the mobile versions were released, it was essentially the same game. The major difference had to do with the game's economy - the mobile versions are free-to-play, with in-app purchases, while the PC version was designed without in-app purchases (and the economy was adjusted appropriately).

Unfortunately, the PC versions of our games have become far less popular over the years, and we make very little money on them. We did make the decision to invest in updating all of our PC games in the summer of 2014 to make sure that they would all run well on the newer versions of Windows. Even though the development costs for those updated versions exceeded the money we made from subsequent sales of the PC games, it was the right thing to do for our loyal fans.

That being said, the sad truth is that rising development costs and distribution challenges continue to make it unprofitable to update our PC games. Because of that, the PC version of VF2 didn't get the new content that was added to the mobile versions.

I was part of the development work on LDW's desktop games from the very beginning, and I loved playing them, too. But times change and we had to change with them.