Six-Face Sal's Fort

Six Face Sal's Fort is the fourth level of World 4 in the game Yoshi's Island DS. It, like all of the fourth levels of worlds in YIDS (and the original Super Mario World 2: Yoshi's Island), it is a fortress type-level with a boss, Six-Face Sal at the end, who is a wooden wheel with six rotating faces on it. It marks the proper introduction of Number Balls, not counting the extra levels. Yoshi must find the Number Balls and throw them at the holder to open up doors and find new areas. Upon defeating Sal and it's fort, Yoshi and the babies move on to World 4-5, where Baby Bowser is met.