Yet another update courtesy of Ed Boon's Twitter account! This time, it's an early sketch of "Test Your Sight", at the time the new minigame first introduced to us in MK: Deadly Alliance (and never used again since). The quote from Ed himself:
Concept sketch for when we were working out "Test Your Sight". Odd that Mike Taran chose Kenshi as the player.

To read Ed's Twitter post directly, just go here. Thanks go to for this one!