PvZ: The RPG Quest Realms!

<Plants vs. Zombies: The RPG Quest!  or  <The RPG Quest Versus

⇨ Realms are parallel worlds connected with The RPG Quest series. First appearance of diffrent Realms can be spoted in the first game, in which Zomboss uses A Portal to Unknown to move into a diffrent one. Unfortunately, he gets stuck in the other Realm, as the portal deactivates and cannot be activated manually again.

The Lawn
⇨ The Lawn is the name of the first, and the main Realm of The RPG Quest series. It's just normal world introduced in PvZ, where Dave and the Zombies live.

Appearance
⇨ The Lawn is really unique as it is very various Realm. It is based on planet earth (it is PvZ earth).

The Unknown
⇨ The Unknown realm is the Realm Zomboss travelled to during the final cutscene of 'PvZ: The RPG Quest. Not much is known about this Realm, so everyone keeps calling it The Unknown.'''

Appearance
⇨ Unknown information.

The Pit
⇨ The Pit is the home realm of Pit Beet and Scaveneger Pea. Player alongside Crazy Dave and Penny enter this Realm to compete against The Pit Fighters. It is stated that A Portal to Unknown opens once a year to find a new Pit Fighters, but it is NOT the same Realm as The Unknown.

Appearance

 * ⇨ The Pit is a big desert, or a wasteland. It is unknown if anything but desert/wasteland biome appears there, as no one ever travelled that far beyond arena.