Industrial Evolution

Industrial Evolution is the 9th world in Plants vs. Zombies: Thymewarped, unlocked after beating Day 12 of Lost City. As the name suggests, Industrial Evolution takes place during the First Industrial Revolution in the late 19th century. During this period of time, the predominant source of power was steam produced from burning coal, in order to power the machines of the time. Factories, like the one you fight outside, are a common sight in cities where people repaired and assembled machines, trains, and generators.
Sewers are the main environment modifier of Industrial Evolution. There are two different kinds of sewers to watch out for, so players need to plant around them accordingly;
* Sewers that are covered by manholes will open up after a period of time and release toxic steam in a 3x3 area, damaging plants in the steam around itself. Blover, Hurrikale and Lotus Root can temporarily remove the steam around a sewer, while Jackfruit and Wax Gourd Guard can be used to plug up these sewers and prevent further steam from being released (they will take damage from any steam still surrounding the sewers though.) Flying plants like Rotobaga can be placed over these sewers.
* Sewers with ladders in them will allow zombies to travel underground through the sewer entrances (ladders facing right) and will come out two seconds later at any of the sewer exits (ladders facing left), even across multiple lanes. Jackfruit and Wax Gourd Guard can plug up the sewer entrances so that zombies will have to eat through it first, or can be used to plug up the exits which will kill zombies in the sewers and prevent future zombies from entering. Flying plants like Rotobaga can be placed over these sewers.
During the second half of the world, train tracks will be featured on lawns at the beginning of levels. They reach the seventh column and can't be planted on but explosive plants can destroy them. During every huge wave, if there is at least one track occupying the ninth tile, a Train Driver Zombie will spawn in each lane with tracks; operating a large steam train which will travel down the track path before stopping at the end and acting as a high health shield for zombies. Construction Zombie will build new tracks starting from the right side of the lawn, or will extend initial train tracks already on the board, allowing the locomotive to travel further.
After beating Day 12 of Industrial Evolution, players will be able to travel to the Renaissance Rebirth and can pursue Dr. Zomboss through the museum or remain in the steam-powered factory.
==Game description==
It's time for the evolution of the revolution! Journey to the Steam Ages of the 19th century, where coal mining was in full force and factories were full of workers and new machines! By jove!
==Order of events==
Upon beating Day 12 of Lost City, players can travel to Industrial Evolution or remain in the ancient city. Penny discusses the time period and explains the reasons for being outside the factory, and also explains the sewer tunnels.
At the start of Day 2, Crazy Dave asks Penny what the disgusting smell is, and Penny explains that the steam-producing manholes are releasing toxic steam and she suggests using plants like Jackfruit to block the steam vents or to use Blover, Hurrikale or Fanilla to remove the steam for a bit.
At the start of Day 5, Crazy Dave asks Penny about the large factory that's moved closer is, and Penny explains that it appears to be a zombie-producing factory more advanced than before and suggests they plant quickly to destroy the factory before they're overwhelmed.
When the player defeats Day 11's wave, a work memo is rewarded, showing a demand for new zombie workers. On Day 12, Dr. Zomboss writes a note asking Crazy Dave if Penny has received any damage as of recently, and politely offers him the services of his Foreman Gargantuars to help fix her up. After this exchange, the player will go on to defeat the Foreman Gargantuar and Crazy Dave reminds Penny that only he's allowed to make repairs to her and that he'd never let zombies make repairs.
After the Gargantuar wave is beaten, players will get the option to continue battling outside the machine-processing factory or visit the Italian museum in the Renaissance Rebirth.
At the start of Day 14, Crazy Dave asks what that disgusting smell is, and Penny informs him of the burning coal frequently used in this time period and warns the player to make sure the Furnace Zombie doesn't get too close.
At the start of Day 16, Penny warns that she detects the train tracks, and Crazy Dave says he detects them too. Penny detects that the zombies might use the tracks to travel across the board, and destroying the tracks might stop them from reaching far.
At the start of Day 20, Penny warns that they have limited options in terms of battling the zombies, and suggests using Wax Gourd Guard to keep zombies at bay as they can be planted over sewer manholes.
At the start of Day 25, Dr. Zomboss writes a note asks Crazy Dave and Penny if vanquishing workers at the factory is a good idea, as removing workers from the factory will decrease production and eventually cause the factory shut down due to lack of profits. After the massive Gargantuar attack is defeated, Penny points out that Dr. Zomboss is a hypocrite, as he zombified the factory workers first so he'd be the true culprit of a factory shutdown.
==New Plants==
* Jackfruit - Jackfruits roll down the lane, dealing damage to zombies and grid items, and plugs up sewers.
* Fanilla - Fanillas shoot a stunning, piercing wind that also knock down flying zombies. Can blow steam and fog away.
* Lily of Alchemy - Lilies of Alchemy lob poisonous buds at high-health zombies, the poison stacking with each hit.
* Sweet Potato - Sweet Potatoes are defensive plants that attracts zombies from adjacent lanes to its lane. Zombies eating it are slowed down.
*
* Droplet Pea - Droplet Peas are low-cost Peashooters that can put out fires with their projectiles.
* Maypop Mechanic - Maypop Mechanics fire gears down three lanes, the gears staying in place to deal rapid damage over a short period; gears deal double damage to armour and grid items. Also creates gears to buff Electric plants.
* Lotus Root - Lotus Roots shoot streams of water at a fast rate, and absorbs toxic steam or fog around it to shoot poisonous projectiles.
* Wax Gourd Guard - Wax Gourd Guards are defensive plants that can be planted on sewers, and stuns zombies that eat it.
* Jalapeño - Jalapeños blow up and deal massive damage to all zombies and grid items in its lane.
==New Zombies==
===Normal Zombies===
* Labourer Zombie - Regular everyday-working zombie.
* Flag Labourer Zombie - Marks the arrival of a huge steamy "wave" of zombies.
* Conehead Labourer - His construction cone makes him twice as tough as normal labourer zombies.
* Buckethead Labourer - His industrial-grade bucket protects him from damage.
* - Uses the sewers to ambush your plants from behind.
* Gentleman Zombie - Flies over past defences and obstacles.
* Coal Miner Zombie - Pushes a wheelbarrow, and drops coal onto your plants. Comes in armoured variants too.
* Ladder Zombie - Places a ladder on your defensive plants to climb over them.
* Foreman Gargantuar - Crushes plants with a wrench and launches Imps.
* Industrial Imp - Launched past your defences, then saunters forwards.
* Furnace Zombie - His unstable furnace blows up plants he comes across, fire attacks make the explosion bigger.
*Train Driver Zombie - Drives a train across the tracks, then stops at the end.
*Steam Inventor Zombie - Pushes a large steam engine block that releases toxic steam all around itself.
*Construction Zombie - Lays out train tracks on the board, and repairs inventions of other zombies.
===Endless Zone Zombies===
*Motorhead Zombie - His motorised engine helmet provides phenomenal, groundbreaking protection.
* - Coming from the sewers, smacks at plants in front of him to get to your brains.
* - Hauls a minecart forwards, blocking projectiles. Drops large deposits of coal upon destruction. Comes in armoured variants too.
*Smokestack Zombie - An incredibly durable zombie that blows up all plants around him and scorches the tile.
*Clockwork Gargantuar - Slow-moving Gargantuar that crushes plants with mechanical feet and cannot be moved around.
==Levels==
There is a total of 25 levels and to play as well as introducing nine new plants (one which returns from the first game, one which returns from the second game, six which return from the Chinese version of Plants vs. Zombies 2, and one from All-Stars;) as well as featuring fourteen new zombies.
===Adventure levels===
Day 	Plants 	Zombies 	Flags 	Notes 	Prize*
9-1: Steam Age 	Choice 	 	 	 	
9-2: Tunneling Under 	Choice 	Engineer Zombie	 	 	
9-3: Criss-Cross 	 	Engineer Zombie	 	Special Delivery level	
9-4: High Tea 	Choice 	Engineer Zombie	 	 	
9-5: Steam Factory 	Choice 	 	None, replaced with factory health	Steam Factory level 	
9-6: Mine Your Head 	Choice 	 	 	 	
9-7: Armoured Workforce 	Choice 	Engineer Zombie	 	 	
9-8: High Risings 	Choice 	 	 	 	
9-9: M for Metal 	Choice 	 	 	 	
9-10: Steam-powered Shooters 	Choice with Endangered	Engineer Zombie	 	Save Our Seeds level 	
9-11: Stealth Tactics 	Choice 	Engineer Zombie	 	 	Note
9-12: Assembly Lane 	 	Engineer Zombie	 	Gargantuar battle 	Renaissance Rebirth key
9-13: Industrial Force 	Choice 	Engineer Zombie	 	 	
9-14: Coal Burnings 	Choice 	 	 	 	
9-15: Factory Forged 	Choice 	 	None, replaced with factory health	Steam Factory level 	
9-16: On Track 	Choice 	Engineer Zombie	 	 	
9-17: High End Production 	Choice with 	Engineer Zombie	 	 	
9-18: Freight of the Furious 	Choice 	Engineer Zombie	 	Flower Crossing level 	
9-19: Mechanical Arsenal 	Choice 	 	 	 	
9-20: Moldy Streets 	Choice 	Engineer Zombie	 	Mold Colonies level 	
9-21: Iron-Forged 	Choice 	 	 	 	
9-22: Mobile Movers 	Choice 	Engineer Zombie	 	 	
9-23: Malicious Manufacturing	Choice 	 	None, replaced with factory health	Steam Factory level 	
9-24: Steam Team 	Choice 	Engineer Zombie	 	 	
9-25: Industrial Revolution 	 	Engineer Zombie	 	Gargantuar battle 	Industrial Evolution Trophy
===Brain Busters===
Main article: Brain Busters
====Special Delivery====
Main article: Special Delivery
Special Delivery is a Brain Buster that is a conveyor-belt level with the plants given via said conveyor-belt. Being a conveyor-belt level, no sun and sun-producing plants will be given. It is playable on Day 3.
====Steam Factory====
Steam Factory is a Brain Buster exclusive to Industrial Evolution, featured on Day 5, Day 15 and Day 23. A zombie-producing factory takes up the eighth and ninth columns, with assembly lines with extending to the sixth column. After players choose their plants, they'll have a few seconds before the factory begins producing zombies; they'll slide down the assembly line and drop onto the ground to continue on foot. Plants can disable the factory for a few seconds with E.M.Peach, although they cannot plant on the assembly lines. Players can see which lanes are about to spawn zombies in through the pressure gauges on top of each gate slowly reaching higher pressure before spinning all the way round, releasing steam and producing the zombie before going back to 0.
Players must destroy the factory using attacking plants, being forced to juggle between defeating zombies and damaging the factory.
==== Save Our Seeds ====
Main article: Save Our Seeds
In this Brain Buster, the player is forced to survive the wave of zombies and protect the endangered Split Peas from the zombies. The player will fail the level if the endangered plant(s) dies. It is featured on Day 10.
====Flower Crossing====
Main article: Flower Crossing
Flower Crossing is a Brain Buster in which a line of flower occupies a long strip of the lawn covering all five lanes. Players must stop the zombies from trampling the flowers by walking across them, otherwise they will fail the level. The flowers are set in the middle of the tiles, they can plant Spikeweed and Spikerock on them so zombies can't trample them. It is featured on Day 18.
==== Mold Colonies ====
Main article: Mold Colonies
Mold Colonies is a Brain Buster where mold colonies occupy large portions of the map and take up several tiles. The player must survive against the zombie while being unable to be plant in certain areas, which in this case takes up all plank tiles. It is featured on Day 20.
===Assembly Avenue===
Assembly Avenue is Industrial Avenue's Endless Zone and it is unlocked after beating Industrial Evolution - Day 25. Players will need to keep updating their defences as the levels get harder and harder in order to survive; while also having to deal with toxic steam coming from the sewers, zombies traveling through sewer lines, and encountering stronger versions of previously-encountered zombies like the Motorhead Zombie and Smokestack Zombie. The layout of the sewer entrances, exits, steam sewers and train tracks randomly changes with each new attempt.
==Related achievements==
==In other languages==
==Trivia==
*Industrial Evolution is based on the Steam Age world from Plants vs. Zombies 2 (Chinese Version). However, Thymewarped's version has way more plants, zombies, unique levels and functionality then the officially released world.
*Industrial Evolution's name is a play on Industrial Revolution, the name of the the period the world is set in, albeit with "Evolution" instead of "Revolution" as the production and influx of machines skyrocketed during this era.
*Engineer Zombie's ability to rise from sewers comes from Reflourished's sewer mechanic for Steam Ages, where Labour Zombies would rise up from the sewers behind your plants and walk right.
*Day 18's level, "Freight of the Furious" is a reference to the movie title "Fate of the Furious", but with freight replacing fate due to the relation to trains.
*Sewed Sewers and Oh, the Economy!... achievement names were provided by ManyKarma.