The reason this solution has a lot of methods because I don't know many crucial details like windows version or what Graphic card do you have etc...
I would assume you downloaded the windows version.
those solutions are for almost any RPG game not just my game.
it's a common issue with RPG Maker games as it often tied to graphics initialization problems since MZ relies on WebGL and browser-like rendering via NW.js.
Here are some methods to fix it:
1-Run as Admin
Right-click Game.exe > Run as administrator.
2-Installing Visual C++ Redist 2015-2022 (x64 or x86) from Microsoft.
This may solve the Graphics issue then open the game
Note: Be sure to download Visual C++ from the official sites
3- Update Your Graphics Drivers (Most Common Fix)
The most frequent cause is an outdated or corrupted graphics driver.
Determine your graphics card: Find out if you have an NVIDIA, AMD, or Intel integrated graphics card.
Go to the manufacturer's website: Download the latest official driver directly from the NVIDIA, AMD, or Intel support site.
Note: Do not rely on Windows' built-in "Update Driver" tool, as it often misses the necessary updates.
Here is a solution to literally bypass any problem with any RPG game MZ or MV
but it requires Visual studio code
Here is step-by-step: Open & Run the Game Using Visual Studio Code (30 Seconds)
Open the game folder in Visual Studio Code
1- Launch VS Code
2-File → Open Folder… → select the folder where you extracted the game (the one that contains Game.exe, www folder, package.json, etc.)
3-In VS Code’s left sidebar, expand the www folder and double-click index.html (in MV or MZ you won't find www folder. just open the game file in VS and you find a file name Index)
(It will open in the editor.)
Right-click on index.html in the file tree (or on the tab) → “Open With Live Server” If you see this option → click it → the game starts instantly in your browser, no graphics error.
If you don’t see “Open With Live Server”, install the extension first (step 4).
4-(One-time only) Install Live Server extension In VS Code, click the Extensions icon (or Ctrl+Shift+X)
Search “Live Server” by Ritwick Dey
Click Install (takes 5 seconds)
Now right-click index.html again → Open With Live Server
→ Your default browser opens and the game runs perfectly (full screen with F11 if you want).