There could be different reasons for this kind of problem.
First of all: did you unzip the game? (It will not run from within the zip archive.)
Do you use a 32 or a 64-bit system? This game is a 64-bit application and will not run on a 32-bit system.
If this is not the case then the reason could be a missing library. Maybe it is a graphics issue (despite the fact that this is a pixel art game, it makes use of some more advanced graphics functionality).
If you are a more experienced user you could try to start the game from command line:
- press Win + R
- type "cmd.exe" and hit enter to open the command line
- navigate to the folder where you unzipped the game (something like "cd C:\path\to\the\game\")
- type "TinyPixelWars_Windows.exe" and hit enter to start the game
If the command line spits out some error message then please let me know.
I will also see if I can find something that might cause this problem.