Fans of the immensely successful casual tower defense game, Plants vs. Zombies, have a lot to look forward to. Popcap has announced (via Gamespot), not one, but two new games in the Plant’s vs. Zombies universe! Protect those brainz!

The first game that Popcap announced is the game that we have all been waiting for, Plants vs. Zombies 2. Unfortunately, Popcap didn’t have much info for us other than the fact that the game does exist and it's coming out sometime in early summer. We can only hope that the sequel comes out for as many platforms as its predecessor did.

Popcap is also working on a new Facebook game called Plants vs. Zombies Adventures. The game is currently in a closed beta and is going to have an official release later on in the screen. The game is, “a highly accessible, zombie-zapping adaptation of the original game designed specifically for Facebook.” It also appears to take place in an isometric view with zombies wandering in several directions rather than simply walking a straight line. The gameplay seems far more like a traditional path following tower defense, than normal Plants vs. Zombies, and the selection of plants to use seems to be greatly reduced from the full game.

Popcap has promised more information about Plants vs. Zombies 2 will come in the near future. Until then, we just have to wait and hope the zombies don’t pound on our doors too hard.