Buggy! just as you said.
Is it normal that by pressing W and A you can just run over the terrain without mining a block to pass or something?
A weird red box starts moving when using WASD, character? Just a stickman?
What do you want this to be? a remove-and-place-block game? Or an adventure with a player controlled character?
boring game.
The upper red block is transparent.
Fake trees and cacti!