Nightmare Mode Waves
This is the view of the waves and when toilets spawn, so you can be prepared on any wave.
This is nightmare mode, the default hardest mode in TTD, and the 2nd hardest in all gamemodes.
Simple Waves Explanation
Early Game Waves (1-20) - Difficulty: Medium-Hard
Mid Game Waves (21-40) - Difficulty: Hard
Late Game Waves (41-50) - Difficulty: Insane- Impossible
Waves:
Wave 1-3 - Small and Normal Toilet (More of them)
Wave 3-4 - Glass Toilet Spawns, And Small Toilet spam.
Wave 4 - Dual Claw Toilet Spawns
Wave 5 - Boss Toilet Spawns and a few weak units.
Wave 6- Mutant Toilet
Wave 7 - Weak Toilet Spawns and Mingun Toilet
Wave 8 - Like Wave 7
Wave 9 - Jetpack Police Toilet Spawns and 2 mutant toilets
Wave 10 - few weak toilets, with BUSSZAW FLYING TOILET and 3 boss toilets.
Wave 11-13 - Large Toilets, Mutant Toilets, Minigun Toilets, and a few weak toilets. (Mutant Toilet 2.0 spawns at wave 13
Wave 14 - Small Toilets Spam, Multi Claw Jetpack Toilet, And Boss Toilets Spawns ( Barrel Explosive Toilets spawns here)
Wave 15 - 1 Vaccum Toilet, and 1 dual blade toilet.
Wave 16 - 2 Mutant Toilet 2.0 Spawns
Wave 17 - Boss Toilet 2.0 Spawns and Dual Blade Toilet
Wave 18 - Spider Toilet Spam Wave and Dual Claw Toilets, With Large Glass Toilet.
Wave 19 -Flying Rocket Launcher Toilet Spawns (Airplane and Jetpack Police Toilet)
Wave 20 - UFO Toilet and A few Vaccum toilets and other stun toilets spawns
Wave 21 - Rocket Toilet and other stun toilets spawns
Wave 22 - Many Weak Toilets and Mingun Toilets, With Boss Toilet 2.0 as last spawned toilets.
Wave 23 - 2 UFO TOILETS AND 2 FLYING ROCKET LANCHER TOILETS SPAWN
Wave 24 - Jetpack Toilet (Police) and Dual Claw Toilets)
Wave 25 - Glass Toilets and Dual Flying Buzzsaw, With 2 rocket toilets
Wave 26 - Dual Blade Toilet and other stun units (airplane toilet is in this wave)
Wave 27 - Busszaw Mutant Toilet and other few stunning toilets
Wave 28 - 5 Rocket Toilets
Wave 29 - Stun units Spam
Wave 30 - Mutant Toilet Spam and Dual Blades, with Giant Dual Blade.
Wave 31 - Stun Toilets Spam
Wave 32- 2 UFO TOILETS AND ALOT OF STUNNING UNITS
Wave 33 - Mutant Toilet Spam, Helicopter Parasite Toilet, and Vaccum toilet spam
Wave 34 - Stun Toilets Spam, Flamethrower Toilet Spawns
Wave 35 - Strong Toilets Spam
Wave 36 - Spam Toilets Stun, And Toxic Skull Toilet
Wave 37-42 - Super Strong stunning Units Spam (and all Late Game Waves) (and Claw toilet (ASTRO)
Wave 40 - Boss Toilet 4.0
Wave 43 - Helicopter Bomb toilet and A lot of Stun Units
Wave 44 - Airplane Toilets and Stun Toilets (Soldier Rocket Toilet) Spawns
Wave 45 - Vaccum Toilet Spawns and a few strong stun units.
Wave 46 - Infected Speaker Titan
Wave 47- Glitch Toilet Wave, Dual Blade toilets, and alot of stunning units.
Wave 48 - Jetpack Mutant Toilet (Former Final Boss) and Toxic Mutant Toilet
Wave 49 - Qcto Rocket Launcher Laser Toilet and alot of stun units, Including the Massive Busszaw Oven
Wave 50 - Final Wave, Strong Units spawn (Over Million Health) and Final Boss (Scientist Toilet) and Secondary Boss Toilet (Boss Toilet 4.0)