It's a false positive -- sometimes this game trips Windows antivirus, as do many.

You could tell Windows that it's okay and run it anyway, but no hard feelings if you don't want to after that.

Thank you for letting me know specifically what it was detected as though -- I'll see if there's anything I can do to make it less  sussy to Windows.

I'm glad you liked it, warts and all!

And thanks for letting me know it worked - it's kinda tough knowing whether the engine relies on some things that are specific to the few machines I've tested it on.

I'm sorry to hear that, but thank you so much for letting me know.

I issued a patch should make the game work on more machines.

The game required a GPU and drivers capable of OpenGL 4.5 before, but now it only requires OpenGL 4.0, or OpenGL 3.3 if you play the version without grass.