- For the Chinese version of the level, see Wild West - Day 4 (Chinese version)
- The mechanic of this level is simple, survive the zombie attack with only ten plants given. Plants are given one at a time meaning, the player will only be given one plant for every zombie that will appear on the lawn.
- First, it is easy if one understands its tutorial or it becomes hard: This level is just like a puzzle. A plant will be given in the conveyor-belt. Once the player plants that plant, the conveyor-belt will disappear and he or she needs to kill all the zombies to plant another plant. This is a wave. There are ten waves in total. There will be always a lot of minecart tracks. The player take advantage of them as he or she can only plant one plant each wave. However, planted plants will be saved if he or she survives. The player will not get any lawn mowers, and the player will get Plant Food at the end of this level, so he or she need to make a certain strategy. Keep moving minecart tracks and one will never lose, unless he or she did something wrong.
- The small number next to the zombie icon means that zombie will always appear in that lane, with 1 being the topmost lane and 5 being the bottommost one.
|Waves||Non-dynamic zombies||Ambush zombies||Note(s)|
|3||1 5 2||None||are available. are no longer available.|
|4||3 4 1 4||None|
|5||4 5 1 2 3||None||are available. are no longer available.|
|6||1 3 5 5 2 4||None|
|7||1 3 5 2||None|
|8||1 2 3 3 4 5 1 2 5||None||are available. are no longer available.|
|9||1 2 2 4 5 5 5 1 3 4 2||None|
|10||3 5 2 4 1 3 5 4||None||500%/7 Plant Food, final flag|
- Plant a Peashooter on the last minecart track. Attack the zombie.
- Then, plant another Peashooter on the lane having the zombie. Remember do not plant on minecart tracks.
- A Prospector Zombie will appear. Plant a Split Pea on the second minecart track (on the second column). Move that minecart to the lane having that zombie.
- Do the same. Now create your own strategy.
- Plant a Repeater on the third minecart track on the lane having the Conehead Cowboy.
- Focus on killing the Pianist Zombie and the Buckethead Cowboy.
- Do as the same. Remember to plant on minecart tracks if important.
- Threepeaters will appear, so use them wisely.