How can I fix the Unity crash when launching Dave the Diver?

It sounds like you might need to free up some disk space or check if there’s a RAM issue. However, you mentioned you have 400GB free and a 64-bit OS, so that shouldn’t be a problem. Just so you know, the game doesn't require DirectX 12, so your DX11 setup should be fine!

Have you checked the error message? A lot of people forget to include it when asking for help, which can make troubleshooting harder. If the crash happens without a detailed message, try looking into the game files or forums for more specific error reports. You should also contact the developers; their Steam page confirms DX11 support.

Also, if you’re using Steam, make sure to specify DX11 in the launch options by adding -dx11. I had a similar crash with another game, and that fixed it for me. But if you've already tried that and it didn't work, it might be a different issue.

I appreciate the tips! The error message is just a picture of the game with a red flag and the word Unity. It doesn’t provide more details, which is frustrating. I thought mentioning DX12 would be relevant since it's been an issue with other games in the past.