Each of the 10 zones (except Frontyard Resto) in Papa Louie TD has its own special gimmick. These gimmicks have a special function that affects either towers, enemies, or both.
No Coins (Nightclub Burgeria): Coins do not randomly generate in Nightclub Burgeria. However, Lucky Sevens and Golden Milk towers still generate coins.
Water (Backyard Freezeria): Some parts of the Backyard Freezeria have water on them, preventing you from deploying towers without a raft. Because of this, there are terrestrial enemies riding on aquatic enemies. However, aquatic enemies spawn by themselves sometimes.
Electronic Fog (Backyard Freezeria - 8PM): A fog machine will activate every wave, spawning fog on the right 3 columns.
Filling Dispensers (Orchard Donuteria) - Cream filling buttons from Paleteria. They boost the damage of all surrounding towers of the same color by 20%. For example, Strawberry Yogurt dispensers will boost surrounding red towers. Filling Dispensers also can be damaged by enemies and explode when destroyed, dealing 500 damage to surrounding enemies.
Bar Pops (Poolside Scooperia) - Bar Pops float above the water to deploy towers on without deploying a raft first.
Sky Ambush (Roadside Bakeria) - Enemies will spawn from the sky every wave. They cannot be destroyed before landing by Air Target-class towers.
After Level 7-10, Radley will be fought again at the final level of each zone. Zones 8 to 10 have 15 levels each.
Cheese Pits (Field Cheeseria) - Towers cannot be deployed on these obstacles. Enemies will ambush from these pits during the final wave of the level.
Ice Blocks and Ice Bombs (Winter Scooperia) - Ice blocks contain random enemies (except elites and Burgerzillas) that will be released once they are destroyed, while ice bombs freeze enemies when they are destroyed by towers.
Leaf Piles (Thanksgiving Paleteria) - These piles of fallen leaves have 400 HP and if not destroyed, will spawn either a Brown Onion, Kaiser Onion, Tomato, or Sundaesaurus on the final wave.