Survival: Endless - Simple 6 Cob Cannon build

This is a simple strategy for Survival: Endless with 6 Cob Cannons. The backmost column is safe from Diggers because there are no plants there. The Gloom-shrooms at the second column are used to deal with Diggers before reaching the plants. The Spikerocks are for the Imps. The Tall-nuts are there to keep the cobs safe from Dolphin Riders.

Starting round (flags 1-2)
Start with Sunflowers, Cattails in the middle of the pool, Tall-nuts in front of Cattails, and 4 Cob Cannons at the back of the pool.

S - Sunflower

Ct - Cattail

Tn - Tall-nut

Cc - Cob Cannon

Flags 3-6
Add Winter Melons at the 4th column on the ground; Umbrella Leaves at column 5, lanes 2&5; and Gloom-shrooms at column 6, lanes 2&5. Upgrade Sunflowers to Twin Sunflowers (except column 2) to earn sun. Every second flag of each round, 5.5 seconds after huge wave signal appears, use Ice-shroom to stop the underwater zombies from coming out.

W - Winter Melon

Ts - Twin Sunflower

Gs - Gloom-shroom

Flags 7-10
Replace Sunflowers at column 2, rows 1&6 to Gloom-shrooms in Pumpkins for the Diggers, and to Umbrella Leaves at colums 2&5, rows 2&5 for Bungees and Catapults. If there are Gargantuars, replace Twin Sunflowers in column 3 with Spikerocks and pumpkin the plants in column 2 for the Imps. Remove the extra sunflowers if the Sun reaches maximum (9990 sun) but keep 2 of them in column 5, rows 1&6.

U - Umbrella Leaf

Sr - Spikerock

- Pumpkin

Later gameplay
Launch a pair of cobs every 12 seconds. Every final wave of a round, use the Ice-shroom 5.5 seconds after the huge wave signal appears to prevent the underwater zombies from coming out. Cobs should be launched between the 7th and 8th columns to prevent an Imp from landing on Winter Melons, but if in case it happens, use Jalapeno.