Our Top Ten Starting Tips: Main Walkthrough

Pause For Thought: Pause frequently to make better decisions, especially in Sudden Death and when managing finances. Note that the clock continues in Time Trial maps. Pausing also reveals enemy paths.

Buy Back: Sell towers for full price when the game is paused to avoid financial loss. Selling while un-paused yields reduced value. This is crucial for upgrading or replacing towers efficiently, particularly in Time Trial and Sudden Death.

Unlock Better Towers Right at the Start: Replay early levels on Heroic for stars. Completing 'Twist of Fate' on Casual or Tough unlocks useful towers like the Hive, Tesla, and Flamethrower, making Heroic difficulty more manageable. On iOS, download both game versions to get the Polymorph Tower for free.

Create Pincer Points and Bottlenecks: Funnel enemies into narrow paths lined with towers. Enemies seek the shortest path and prefer to move upwards. Use towers to create confined spaces that loop back, slowing enemies and maximizing damage from area-of-effect towers placed at corners.

Itemized: Don't dismiss items due to coin cost. They are effective against enemies immune to certain towers (e.g., Spanish Flu against Hazmats) and simplify achieving 3-stars on all levels.

Proper Item Use: Save items for critical moments. Their damage percentage remains constant regardless of enemy health, making them ideal for endless modes where enemy health scales significantly.

PC Hot-Keys: Utilize keyboard shortcuts (1-6 for towers, Q, W, E for items) for faster tower and item selection, especially vital in Time Trial maps where the clock is always running.