Welcome to Minecraft Websim Edition!
In this game, it's a recreation of Minecraft. It has similar mechanisms, the same music, a day and night cycle and a survival / creative world creation system.
Controls:
WASD keys: Move
Mouse: Look around
Shift: Sprint
C key: Crouch
Left Mouse Button: Mine / Attack
Right Mouse Button: Place
Number keys 1-9: Change item slot
P Key - pause the game
If you want to change these keys, go into the options and change your keybinds.