Cloned Cube is a Portal mod. It takes place after GLaDOS' fall in Portal. You assume the role of Chell's secret clone. You have to escape or else you may just be tested to death. There is one obstacle. CUBiS is trying to kill you.
Cubes are a valuable tool to block turrets with.
In-game poster.
"almost completely indestructible"
Until it instantly vaporizes at the touch of an emancipation field...
Continuous*
And I also didn't know that.
And also,
COPYRIGHT 1983?!!!