Grimrock

Mod run fine on my system.
But why no 2k or 4k and high textures ( i can try this .

I'm not quite sure what you mean.
I was writing about graphics settings and texture resolution (high, medium, low)
I went through the mod on medium texture settings in FHD resolution.
When running on higher settings, the mod sometimes “silently” crashed when saving.

At startup, the game asks you if you know the password to play your party (It will be given to you at the end of the walkthrough).
Obviously, when you run it for the first time, you can't know the password.
Nothing - it's not a valid password either)