Yellow Cap Switch



The Yellow Cap Switch (sometimes shortened to the Yellow Switch) is an enigmatic object that can be found within B3313. While visually similar to the standard Cap Switches, the Yellow Switch does not activate any unique ? Block, but instead shuffles around many of the game's personalization values and other flags. Like the standard switches, it can be found in two distinct locations: Bob-omb Cavern and the Holy Yellow Switch Palace; however, only the switch found in the latter course actually has any proper effect.

Effects
The Yellow Cap Switch randomizes different flags within the game's data. Upon pressing it will immediately cause the Holy Yellow Switch Palace's textures to corrupt alongside a presenting the player with a random dialog prompt that can be seen from various levels or NPCs in B3313. On the rare occasion, pressing the switch will crash the game. Its other effects include:


 * Whether the player has their hat after warping away.
 * What type of B-Roll HUD the game uses.
 * The state of all eight Overworld ID Stars.
 * The activation state of all three of the other Cap Switches.
 * Whether the player is warped to the Plexal Upstairs upon collecting a star, or to the Plexal Lobby upon losing a life.
 * Potentially removing various NPCs, including important ones like Koopa the Quick.
 * Swapping the Daytime and Nighttime hours.
 * Modifying various personalization values.

After pressing the switch, the player will have no choice but to teleport back to the Beta Lobby, as there is no exit or warp out of the area. If the player returns to the Holy Yellow Switch Palace, the switch can be pressed to randomize its values again.

Some things to note about Pressing the Switch:


 * The effects listed can be undone by loading a savestate taken before pressing the Yellow Cap Switch.
 * If the game is saved after pressing the switch, its effects will be locked onto the save file until the player presses the switch again.
 * If the random dialog chosen after pressing the switch contains a save prompt, the effects of the switch will immediately be saved.
 * There have been some claims that the game saves the states modified by the Yellow Cap Switch to the player's .eep file (essentially meaning that it's saved automatically in a separate location from your save file), theoretically permanently tainting the player's save even if loading a prior savestate. However, this does not appear to fully be the case, as most of the effects changed by the Yellow Cap Switch listed above can be undone by loading a save state and have no lingering effects.

Trivia

 * Originally, the Yellow Cap Switch was meant to be far more destructive in v0.9, supposedly being powerful enough to remove entire objects and warps from the save file.
 * Before v0.9, the Switch would only appear in Jolly Roger Lagoon, and had a consistent effect (3 overworld stars added to the player's file, a stolen cap, and unlocked star doors in Vanilla Lobby).