Neat graphics but I agree some comments below that you really need to add some action (jumping, mining, enemies etc) before this can be called a game. I’d love to see more added to this. Otherwise it’s more of a fun little experiment than a game.
Cool tilt shift effect. Ive found that adding a UI goes a long way in taking your game out of the prototype phase.
I wouldn't even call this a game prototype, it's just someone playing around with unreal engine.
I would be highly impressed if this was done in shadertoy.