Some games use a compatibility layer that runs DX11 code on a DX12 driver. While 3DMigoto occasionally functions in these environments, it is unstable and not officially supported.
So, what kinds of applications can be built with 3DMigoto and DirectX 12? Here are some examples: 3dmigoto dx12
The community continues to "implore" developers to update the tool for upcoming heavy hitters like Grand Theft Auto VI or Unreal Engine 5 games, which are natively DX12. For now, the "useful" advice is to check if a game has a or a "Legacy" mode; if it is strictly DX12, 3DMigoto likely will not work. Some games use a compatibility layer that runs