Sorry for the English, I use a Google Translate.
On Windows 10, after pressing "Play", nothing happens. Your Vendetta, your Scarle Blade, and the original Eden Eternal does not run.
I tried all the tips from this forum (part 1, part 2, and etc.). Over the course of a week, I did a lot of experiments with a large number of computers. Here is the result:
Windows XP (2 comp) - works.
Windows 7 (1 comp) - works.
Windows 10 (5 comp) - 2 works, 3 does not work.
I also tried to run the game on virtual machines - it works everywhere.
I want to note that on a personal main computer (Windows 10) a year ago, the game worked, but now it does not work. I rolled back the updates, played with the drivers, set up the Flash Player - nothing helped. I also noticed that the two computers with Windows 10 that the game runs on are either an ATI video card or an Intel integrated video card. Other computers have NVidia graphics cards. Perhaps the problem is in the drivers. But on a laptop with two video cards, disabling the NVidia card, I could not start the game. On the main computer, removing the drivers - the game did not start. On the main computer, I started installing all the driver versions that were available for my video card. Neither version allowed the game to run. I see a similar problem occurs in many people.
Soon I will try to reinstall Windows and test the game on a clean OS. Clearly the problem is in the game engine and is there any way to fix it? Thanks.
P.S.: Please do not advise me what was written in part1, part2 (install DirectX 9, use compatibility and etc.). I work as system software programmer, system administrator and, hobbyist game developer. I am well versed in the issues of support and compatibility of software and games on different OS. But in this case, I can't even reliably determine the problem that is causing the game to not start.