Welcome to the strategy forum. This is a place to make strategies and share them with other members of this wiki's community. To add a new topic, type the title. Pokemon Tower Defense Walkthrough and Wiki is here to provide you with a comprehensive break down of the game and how to play it. The guide offers solid. Cerulean Gym is the 10th Pokémon Tower Defense level and the 2nd Gym challenge in the game Strategy. Main article: Forum:Cerulean Gym.