Level 4-11 was a bonus level, and the eleventh Fog level in Plants vs. Zombies: Journey to the West. The player had to pay 20 gems to gain access to this level. To complete the level, the player had to not spend more than 2000 sun.
This level would have been difficult to beat without any instant-kills or Split Peas, as the Digger Zombies that could walk from the left side of the lawn.
There would have also been a lot of Jack-in-the-Box Zombies, so the player would have to have a lot of attacking plants when they come so they can defeat them before they explode.
The objective could also cause problems for the player, as the Jack-in-the-box Zombies could wreck the player's defenses easily if the player was careless.