Gendoor
Gendoors are objects in the original Rayman game which trigger certain events. There are three types of gendoors available; normal gendoors, sparkling gendoors and ting gendoors.
In Rayman and its spin-offs
Normal gendoor
Normal gendoors are the most commonly used ones and appear numerous times in the original game. They are usually not shown, except for the Gameboy Advance version where they are shown as sparkles, and trigger an event when Rayman comes within its range. In the original game they usually trigger cages or lives.
In Rayman Designer there are several types of normal gendoors available. There is the super gendoor, gendoor size 1, gendoor size 2, gendoor size 3 and gendoor size 4. The super gendoor saves its action upon the player dying, while the others reset. The size determines the range of the gendoor. Size 2 has a 50% larger range than size 1, size 3 has a 100% larger range than size 1 and size 4 has the same range as a ting.
Sparkling gendoor
Sparkling gendoors act like normal gendoors except that they need to be punched with Rayman's fist in order to be activated. A sparkling gendoor is always visible. There is only one sparkling gendoor which needs to be punched in the original game. It appears in Twilight Gulch.
Ting gendoor
Ting gendoors are activated once all tings of a specified color, except for the normal blue, have been collected. These only appear in Rayman Designer and its spin-offs.
Similar appearances in other games
Butterflies in Rayman Legends and Rayman Adventures act similarly to gendoors.