Medium Mode Waves

This is the best grinding method for Newbies and it is the 2nd easiest mode in TTD

This is the view of the waves and when toilets spawn, so you can be prepared on any wave.

Simple Waves Explanation

Early Game Waves (1-15) - Difficulty: EZ PZ - Easy

Mid Game Waves (15-25) - Difficulty: Easy

Late Game Waves (25-30) - Difficulty: Easy-Medium

Wave 1 -  Small Toilets Spawns and Normal Toilets (0.001% Chance of Losing)

Wave 2 - Small Toilets Spawns (0.001% Chance of Losing)

Wave 3 - Small Toilets and Normal Toilets Spawns (0.002% Chance of Losing)

Wave 4 - Like Wave 3 (0.02% Chance of Losing)

Wave 5 - More Spawned Toilets that Spawns in Wave 1-4 (0.05% Chance of Losing)

Wave 6 -  Spider Toilets Spawns

Wave 7 - Spider Toilets and Small Weak Toilets Spawn

Wave 8 -  DJ Toilets and Spider Toilets

Wave 9 - Normal Toilet Spam and Spider Toilets

Wave 10 - Dual Claw Toilet Spawns and Spider Toilet and DJ Toilet Spam

Wave 11 - Police Toilet, Small Toilet, And Spider Toilets Spam.

Wave 12 - 2 Dual Claw Toilets and other weak toilets, With Large Toilet

Wave 13 - More Large Toilets and Spider Toilets

Wave 14 - More Toilets Spam wave

Wave 15 - Minigun Toilet Comes, And Vaccum Toilet and Boss Toilet

Wave 16-19 - More Toilet Spam (With Dual Claw Toilet and Mingun Toilets) (With Large Toilets)

Wave 18 - Another Boss Toilet

Wave 20 - Weak Units Spam, Large Toilets, 2 Boss Toilet, and 2 Vacuum Toilets

Wave 21-25 - Boss Toilets, Mutant Toilets Spawns more often here.

Wave 21 & 24 - Toilet Spawn rate Increased

Wave 24 - Jetpack Police Toilet Spawns

Wave 25 - More Boss Toilets and 2 Vaccum Toilet Spawns

Wave 26-29 - Large Toilets, Mutant Toilets, Boss Toilets, Some Stun Units, And Weak units spawns 100% in this waves

Wave 30 - Final Wave (Boss: Boss Toilet 2.0, He can stun) With Giant Glass Toilets and Strong Toilets.