Here's my world idea...
Description: It's the 1200s, and Zombie Mongols are on the rise! Do you have what it takes to crush the enemy?
25 Levels (Garg at level 8)
Brain Buster: Great Walls (Zombies can only be hurt after they advance past the walls, but there is no ceiling to these walls, so they are still vulnerable to certain plants)
Ambush: Trojan Horses! Zombies will come in riding a trojan horse, which deposits them on either of its sides.
Modifier: Power Tiles (Just like the ones in the Chinese level: Kung Fu World.) Endless Zone name: Brutal Barracks
Avocado-Pult: Lobs Avocados at Zombies that do more damage than Cabbage-pult, but less than Pepper-Pult. Cost: 150 Sun
Vocaloid Snapdragon: MIKU WANTS IN PVZ! Hah heh. Anyway, the shots only travel in front of her, but she does more damage and has as much range as possible. Cost: 150 Sun
Cactus: Needs no introduction. Cost: 125 Sun
Umbrella Leaf: Works just like it would back in PVZ1. Cost: 75 Sun
Cherry Chain: Flings Cherries in a straight path, doing damage to and wrapping around Zombies, slowing them down. Cost: 225 Sun
Oleander: Shoots poisonous clouds at zombies, which stay around for 3 seconds. Cost: 175 Sun
Guardichoke - Functions just like the Pumpkin from PVZ1. Cost: 150 Sun
Spaz-Shroom (Premium Plant, for $2.99) - Reflects projectiles thrown at it back at Zombies. If it reflects a projectile that a Jester threw back, the Jester will not counter (We don't want an infinite loop, now do we?). Cost: 100 Sun
Mongol Flag Zombie
Edge Zombie: Can throw his blade like a boomerang.
Smoke Signal Zombie: Can summon more Zombies (Unless it is the final wave, and they are either regular, coneheaded or bucketheaded) to the field.
Cannon Zombie: Functions just like the first game's Catapult Zombie.
Commander Zombie: Will come in riding a Zombie Horse at first, and has a one-use sword that will instantly kill a plant. Once it uses this, it behaves like a Buckethead.
Zombie Horse: Commander Zombies come in riding these, but after a few hits, they get super pissed, rear up, drop off the Commander Zombie and proceed forward at an alarming rate.
Zombot Sapphire Dracodon: Can destroy Power Tiles, and can also aim for specific plants. Other than that, it behaves just as you'd expect. It is actually a walker (like the bosses of the first 4 worlds) with a one-eyed dragon head, and a tail at its rear.
What do you think, and got any other ideas for this concept? Comment below. :)