MAP03: Marble Zone (Doom Zero)

MAP03: Marble Zone is the third map of Doom Zero. It was designed by Christopher Golden (DASI-I).

Secrets

 * 1) Head south from the starting point and climb the steps to the west. As you head east, the floor which you crossed earlier will rise along with a wall beyond it. In order to get past that wall, go back down the steps a bit until you hear the walls lowering, then quickly back up again. If you do it right, the wall beyond will not rise up. Now jump across the floor and enter the secret to get health bonuses and a megaarmor. (sector 16)
 * 2) In the water area, get to the north side and go east which will make several of the floors rise up to your level. Cross over to the south and hop down near the southeast side. You will find a switch at the base of the higher platform. Use it to lower the platform, as well as another one to the west, revealing another switch at the base of the soul sphere platform. Using that switch lowers the platform with the soul sphere. (sector 77)
 * 3) In the water area, get to the east side and open the wall with brown vines that is surrounded by walls with green vines. You will find a backpack. (sector 95)
 * 4) In the water area, get to the west side where four armor bonuses are at the west wall. Lower that wall to find a rocket launcher, rockets, and a medikit. (sector 98)
 * 5) Head south from the starting point and climb the steps to the west. Head east and around until you can go east to the outside area. Doing so will raise the floor up. Go north, then go west and jump across the starting point to get a secret area with health bonuses and a computer area map. (sector 109)

Current records
The records for the map at the Doom Speed Demo Archive are:

Things
This level contains the following numbers of things per skill level:

Trivia

 * The title of the map may be a reference to the Sonic The Hedgehog level of the same name.