N64 Bowser's Castle

Bowser's Castle is a race course in Mario Kart 64 and features Thwomps that block drivers from preceding to further areas. Near the beginning of the course, there is an imprisoned Thwomp tinted green with yellow teeth due to the lighting, who will shake and laugh if the player goes near it. The laugh can also be heard by the normal Thwomps throughout the course. In further corridors there are pictures of Bowser and large stone statues that shoot flames from their mouths, but they are harmless. At the end of the track racers will race on the roof of the castle. On the last lap, or when the player gets too close to the Bowser statue at the start of the track, Bowser's famed laugh plays. Thwomps are the main obstacle in this course. Most of them will move around the room and try to crush the racers and some slide across the room. The Thwomps' laugh in the N64 version is the same as Wario's, only pitched down. Because Wario's voice changed for the international release, the Thwomps' voices changed with it.

Appearance in Mario Kart Wii
This course reappears as the last course of the Lightning Cup in Mario Kart Wii, and is the final course overall. Many changes have been made. In this version, Lava Geysers spring out from the pits to cause the drivers to bowl over, specially when racers attempt to jump. Due to lighting improvements, the imprisoned Thwomp does not appear green any more and reacts when players drive near it. The evil laugh made by the sliding Thwomps in the original version is no longer heard; instead, they make angry expressions and rumbling noises. The flame-shooting statues are still harmless. Bowser's laugh is still heard on entry on the final lap, or when the player gets too close to the Bowser statue at the start of the track. It is the longest retro track, taking around one minute per lap. The bridge that comes before the long circular turn before the end is now broken, with Lava Geysers on the sides.

Several changes to the Wii version track include the following. The Bowser portraits in the N64 version use his artwork from Super Mario Bros. 3. The Wii version portraits resemble his artwork from Super Mario Galaxy. Bowser's laugh that plays in the Wii version uses Kenny James's voice, which is the current portrayal of Bowser.

Tournaments
2009-TournamentMarch2.jpg In Mario Kart Wii, a tournament occurred on this track, which had players race against Dry Bowser, who utilized the ability to attack with fireballs. This tournament took place as the second tournament for March 2009, and it was restricted to karts. It was later repeated as the second tournament of June 2010, but without any restrictions. It was repeated for the third time as March 2011's second tournament, and the karts only restriction returned.

Official descriptions
Mario Kart 64
 * Manual: "Surprisingly, the Bowser's Castle has been transformed into a race ground! Because it's inside the building, most of the corners are tricky right angles. However, the most difficult part of the course is where the Thwomps are. They will block your path, and if you run into one, you will spin out. Should you be stepped by one, you'll find yourself squished flat as a pancake."

Mario Kart Wii
 * Official European website: "Racing over the red carpets in Bowser's not-so-humble abode might make you think you're in for a warm welcome from the king of the Koopas. Well, if fire-breathing statues are your idea of a warm welcome..."

Trivia

 * In the N64 version, there is an unnamed Thwomp locked in a cell, whom has been nicknamed "Marty". This cell has a dim yellow light, which makes the Thwomp appear green. Several rumors about using a complicated method to unlock him were created, but no one knows where the rumor exactly came from, as the name "Marty" isn't present in the game's files at all.
 * In the Mario Kart 64 instruction manual, there are "X"s at the third bridge and between the jumps afterward telling the player(s) to watch for falling rocks, despite the fact that there are no falling rocks, or any obstacle for that matter, in that area. However, in the Mario Kart Wii version, there are lava geysers around the bridge and between the jumps.

Bowsers Festung Castello di Bowser (N64)