Bob-omb Battlefield

Bob-omb Battlefield is the first course in Super Mario 64 and Super Mario 64 DS. The player character can enter the course through the painting in the far left room on the first floor of the Mushroom Castle, and the door into the room does not require any Power Stars to open. Bob-omb Battlefield is the grassy battleground of a war being raged between the black-colored Bob-ombs, led by the Big Bob-omb, and the pink-colored Bob-omb Buddies.

Layout
The setting of the course takes place on and around a mountain, split between the territories of the two Bob-omb races. The player starts in the Bob-omb Buddies' territory, far off from the mountain in an area with two Bob-omb Buddies and a cannon that will be available to use after the player has collected the first Power Star, along with a couple of crates and Goombas farther ahead. To the left of the starting area are a few Bob-ombs and a gate that has to be opened by pressing the Purple Switch on the other side of it, providing a shortcut should it be opened. Additionally, several iron balls will roll down the slope and collide around this area. Going up the bridge from the starting area will lead the player into a field with several large rocks, Goombas, a Koopa, and the only Chain Chomp in the game. Several Water Bombs will fall into this area, damaging the player character if he comes into contact with them. Crossing the teetering bridge ahead will bring the player into the Big Bob-omb's territory.

To the left of the bridge is an area with a couple of Goombas and several stumps, in the middle of which is the Star Marker for this course. Up the short set of stairs is a large field with many Bob-ombs and a cannon, along with Water Bombs falling from the sky to attack the player. At the end of the field is a path leading behind the gate from earlier. Going up the stone path will lead into the base of the mountain, which has two or three iron balls (depending on the Star chosen) rolling around in the crevice. The way up the mountain is a spiraling pathway with iron balls constantly rolling down it and gaps the player has to jump over. The player can also use a warp point, located in the small cave the iron balls roll out of, to warp up to the top of the mountain. At the top of the mountain lies either the Big Bob-omb during the first mission, the goal during the race against Koopa the Quick during the second mission, or nothing at all during any other mission.

Also on the course is a floating island that does not appear to be controlled by either territory. The island contains a red and a yellow ! Block, containing a Wing Cap/feather and a Power Star, respectively, and a cannon that can be used to collect the rings of coins floating in the air.

Statistics from Super Mario 64

 * Total Number of Coins: 146
 * Caps Found: Wing Cap (3)
 * Spinning Heart: Near the top of the mountain.
 * Cannons: 6
 * 1-Up Mushrooms (3):
 * Homing Mushroom : #1 In a tree by the Koopa.
 * Static Mushrooms : #2 In the tunnel under the mountain gate.
 * Triggered Mushroom : #3 Appears after the player collects some coins from the ring around the flower bush.
 * Warps:
 * Mario can warp from a bush of flowers near the Goombas and the cannon to another bush that is near the Star Marker.
 * Mario can warp from the alcove midway up the mountain where iron balls are coming out to the other alcove near the top of the mountain.

Trivia

 * In the Super Mario Mash-up in Minecraft, one of the paintings that can be hung on the wall is the painting to Bob-omb Battlefield.
 * The room where the player goes into Bob-omb Battlefield is also located inside Peach's Castle in the pre-made world. However, going inside the painting will lead the player inside a pipe to a beach near Delfino Plaza.
 * In Super Mario Odyssey, the brochure held by Hint Toad and in the Odyssey depicts the map of Bob-omb Battlefield from a bird's-eye view.
 * In a poll created by Nintendo of Australia and New Zealand, Bob-omb Battlefield was voted the "#1 Best-Ever Sandbox-Style 3D Mario Stage."
 * Whomp's Fortress came in second place; Pinna Park in third; Cool, Cool Mountain in fourth; and Bianco Hills in fifth.
 * In the entrance to Super Nintendo World, the painting to Bob-omb Battlefield is present on the wall in the foyer of Peach's Castle. However, if it is looked at from a different angle, then it morphs into a picture of Bowser Jr. with the Magic Paintbrush and Princess Peach's Golden Mushroom.
 * According to Giles Goddard, the programmer of Mario's face, this was the first map to be completed in development.