HearthFall

This is a 3D sandbox god game.

You can procedurally generate worlds of various sizes, from small to massive. You are free to alter the world however you like—destroy it, create rivers, forests, or mountains.

You can also create settlements that will develop autonomously, gather resources, construct buildings, and craft weapons.

For now, people live peacefully among themselves, but there’s always the threat of zombies...

Or a nuclear bomb that you might drop on them.

(The game is in alpha development; a lot of features are still missing.
Claude AI was used to create the game.)