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Debug menu: [Tab]
Movement: [W][A][S][D][Space][CTRL]
Acceleration: [Shift]
Camera: [Mouse]
Hold an object: [Left Mouse Button]
Add an object: [1]-[9]
Flying mode: [V]
Undo object spawn: [Z]
Throw an object: [G] (You need to hold the object with the left mouse button)
This is still a beta version, so there may be a large number of bugs or performance issues
Have fun!