Red Star

Added in B3313 v0.9, the Red Stars are a newly introduced mechanic to the ROM hack and serve as a loose sense of progression the player can achieve through exploring the castle.

Red Star Locations
Note that these locations will like be changed up in the final release. Also, due to v0.9's unfinished nature, some Red Stars are actually just retextured Yellow Stars and will count as such. Therefore, the star door in Haunted Castle Grounds leading to the ending route, which requires 13 Red Stars to enter, can not be unlocked via normal means.
 * Bowser in the Dark World: Defeat Bowser and collect the Red Star he drops. This is usually the first Red Star that the player is guaranteed to come across.
 * Bowser in the Bully Battlefield: Defeat Bowser and collect the Red Star he drops.
 * Bowser's Checkered Madness: Defeat Bowser and/or open the cork box in the next room.
 * Bowser in the Sub: Defeat Bowser.
 * Bowser in the Airship Cabin: Defeat Bowser.
 * Bowser's Castle: Talk to the Toad in one of the hallways.
 * Floor 2B: There's a Red Star inside a cork box, hidden well within the floor's giant maze.
 * Floor 2B (beta): Talk to the Toad in the room with the fake "!" boxes. You can get another red Star here by breaking one of the real "?" boxes in the room (neither of these are real red Stars).
 * Ice-Cold Warzone: Collect the Red Star at the top of the mountain.
 * Wf.z64 (beta): Reach the Star at the top of the tower, then reach it again without any platforms within 40 seconds to obtain the Red Star.
 * Captain Fly Guy's Tower: Defeat Captain Fly Guy and collect the Red Star he drops.
 * The Star: Collect the 5 Silver Stars on the edges of the big Star.
 * Goomboss' Lair: Defeat Goomboss.
 * Toad Catacombs: Collect the 5 secrets by desecrating the dead Toads.
 * Mario's Maze: Once activating the instant warp, you will find a Red Star at the end of the pitch black hallway. You need to evade several deadly faceless Mario clones to get it.
 * Basement Maze: There's a Red Star hidden inside a "?" Box inside the room full of fake "!" boxes.

Red Star Effects
As the player collects Red Stars, they will slowly unlock both more facets of their moveset, as well as new gameplay features that were previously unavailable. The order of effects unlocked with each subsequent Red Star seems to be consistent across playthroughs, although this is not known for certain. The following known effects are:

Enable "personalization" + Restored Long Jump
This is guaranteed to be obtained after collecting the BitDW Star. Before this star is collected, most extra areas outside of the main castle lobby (such as the entrances to Crescent Castle and Toad's Lobby) will not open, and Yoshi will not be present. After the Red Star is collected, the "personalization" is enabled, and the game will open up to the player properly. Additionally, their Long Jump will be restored and become usable again.
 * Restored Backflip
 * Restored Sideflip
 * Restored Squatkick
 * Restored Crawling
 * Restored Breakdance
 * Personalized Textures (e.g. distorted palette, inverted textures or flipped halves of wall textures)
 * Personalized Level Scaling
 * New Enemy Variants
 * Personalized Enemy Spawns
 * Personalized Coin Discoloration

(Rest TBA.)