In Super Mario Maker, this also applied if the Warp Door was placed in the same spot in the New Super Mario Bros. Game Style, when the player reaches it, they'll enter it.
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The symbol used for the first pair of Warp Doors and Warp Boxes. However, the three forms of Warp Doors cannot share a symbol with each other, and neither may the two forms of Warp Boxes. These symbols are also used for Warp Boxes, but a pair of Warp Doors and a pair of Warp Boxes may share the same symbol.
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To mark which pair a Warp Door is part of in Course Maker, the pairs are marked with playing card symbols.
![super mario maker serial key super mario maker serial key](https://squadstate.com/wp-content/uploads/2020/04/Mario-Maker-2-update-cursed-key.jpg)
Warp Door's forms and their appearance in the New Super Mario Bros. Players without one will stay locked out, even if the door was unlocked by another player. If it wasn't activated before the level end sequence begins, only players with a Key will use it normally when reaching the castle. Goal Pole's castle entrance, it'll work like normal when activated before the level end sequence starts. When a Key Door is placed in front of the Super Mario Bros. The Key Door will automatically be entered by the player who unlocks it. Key Doors are initially unusable, but if a player tilts in front of a Key Door while holding at least one Key, the Key will be consumed and both doors its pair will become unlocked and will become usable like normal Warp Doors by all players.
![super mario maker serial key super mario maker serial key](https://squadstate.com/wp-content/uploads/2020/04/Mario-Maker-2-update-cursed-key-1024x576.jpg)
Goal Pole's castle entrance, it will work like normal if activated, but will be ignored when not. When a P Warp Door is placed in front of the Super Mario Bros. P Warp Doors normally appear as dotted lines, but when a P Switch is active, they become blue doors that work like normal doors. Game Style, placing a Warp Door in front of the Goal Pole's Castle entrance will cause the Player to enter the door instead of entering the castle normally. If, when returning, the entrance is blocked, the player(s) lose a life (even with Super Star invincibility). If the exit is blocked, the player(s) will return to the entrance. Tilting while on ground in front of the door will transport the player (and all other players in 'Play Together' Multiplayer) to the other door in the pair. While in Course Maker, each pair of Warp Doors has its own unique symbol to tell different pairs apart. Changing one to an alternate form will change the other to the same form. They cannot be copied, and erasing one erases the other. Warp Doors are placed in pairs in Course Maker.