Tech tree

One of your long-term objectives is to unlock new technologies from the five branches of the tech tree. In the aftermath, much of mankind’s knowledge was either lost or outright destroyed. Fragments can still be recovered from various locations on the world map to aid the colony. The research locations can be searched for Science points which, unlike other resources, are immediately available for the colony. And the bigger your specialists' research skill is, the faster they can extract all the usable knowledge a particular location has to offer.

Technology branches

Science points can be spent to unlock technological advancements in the tech tree, which is divided into five branches:

• Colony adds to your housing and general colonist potential.
• Food offers both improvements to production speeds and completely new forms of cultivation and animal breeding.
• Exploration improves your efficiency and possibilities on the World Map.
• Production increases production capabilities and unlocks new structures.
• Security adds more options to keep your people safe and sound.

The further down the tree a particular advancement is, the more it costs, so always keep an eye on museums, old radar stations and observatories while exploring the map. Science is what takes your colony to the next level from just surviving into getting back what was lost.

List of technologies

	Technology	Category	Tier		Unlockables	Description
	Communal Living	Colony	1	100	Shanty Tenement Tiny Pink Flowers Tiny White Flowers White Flower Bush	Getting people out of tents and into better housing takes some planning. Tenements house several people within the same cramped-up space. Shanty gives more space per colonist, but is more costly to build. Both of these buildings are safer than Tents and Emergency Shelters, and give a better protection against radiation. Start decorating the colony with modest flowers.
	Education	Colony	2	200	School Bottle Cactus Log Flowers Paper Windmills	Educating future generations at Schools is more important than it has ever been. Educated children gain a permanent production bonus once they start working. Creativity and innovation start small. New improvised decorations help to make the colony a much nicer place to live in.
	Remembrance	Colony	3	250	Memorial Paved Road Plastic Flowers Plastic Viola Bottle Tree	Remembering those who are gone is painful but it is the only way forward. A Memorial allows people to light a candle for those lost to the apocalypse and gain some Happiness in the process.
	Comfortable Housing	Colony	4	300	House Two-story House Green Tree Small Green Bush Tall Green Bush	Move your colonists from cramped and leaky quarters into proper houses. House and Two-story House offer the pinnacle of post-apocalyptic luxury and comfort, if you can afford to build them. Along comes a new set of decorative bushes and trees to spice up garden planning.
	Aggression Release	Colony	5	400	Arena	For some, the way to relax is to get punched in the face or see someone else knocked silly. The Arena allows colonists to brawl and let off some steam while others enjoy the carnage from the stands. Maybe it's not civilized, but it sure is fun, and Happiness is assured for those who like this sort of things.
	Knowledge Preservation	Colony	5	400	Library	Preservation of old world texts in a Library is smart for several reasons. That way, you can learn from the past or sometimes just let stories whisk you away from a harsh reality. There is something for everyone in this library, so every visitor will get a small boost of Happiness in their lives. Construction requires Fun Boxes that can be scavenged from the World Map.
	Couch Potato	Colony	6	500	Game Arcade Movie Theater	Look, sometimes you just want to sit and enjoy a silly movie or a few relaxing rounds of Ice Lakes. The Movie Theater or a Game Arcade are both good ways to give a big boost of Happiness to every visitor. Entertainment Boxes are required to build both of these buildings and fill them with fun content.
	Bartering	Exploration	1	200	Trade Center	Your colony is not the only one in the world. Other Societies are still out there and willing to exchange goods once you have built a Trading Center to coordinate these transactions. Trade center attracts bigger trade convoys at your gates who offer much bigger deals than wandering merchants.
	Disaster Forecast	Exploration	2	300	Radar	Catastrophes are bad. Catastrophes you did not know were coming are a lot worse. A Radar Station tuned to monitor the weather, airwaves and distant broadcasts can save numerous lives as an early warning system. It won't prevent the catastrophe, but it gives more time to prepare for the next catastrophe.
	Communal Eating	Food	1	100	Cookhouse Logging Camp	Cookhouse and Logging Camp boost food production in the colony. The Cookhouse creates and distributes nutritious Meals prepared from raw Food ingredients. Cookhouse is also a gathering place where colonists come to share a warm meal together. Logging Camp produces Firewood which Cookhouses and some other buildings need to operate.
	Advanced Farming	Food	2	200	Medium Field Large Field	Takes farming to the next level. Medium and Large Fields afford bigger harvests, feeding even the largest of colonies. Placing them on Fertile soil grants an extra production bonus.
	Alternative Proteins	Food	3	300	Insect Farm	Post-apocalyptic societies must find new and more efficient sources of protein. Edible insects can provide just that. Insect Farms function similarly to Fields but provide steadier Food production and an alternative to Meat. Find new types of insect eggs to bolster yields even further.
	Protected Crops	Food	3	300	Greenhouse	Greenhouses shield the crops from the elements. They can function even through a Nuclear Fallout, providing security in food production during more difficult times. Although, greenhouses are very fragile and prone to physical damage.
	Boring Methods	Food	4	350	Bore Well Large Water Tower	Clean Water can be hard to come by, especially in dry climates. Bore Wells are drilled as deep as required to tap into water reserves, which allows placing them on any soil type.
	Delicacies	Food	5	500	Bakery Mill	Even in the aftermath, people crave a bit of luxury. The smell of freshly baked Bread can have a surprisingly large effect on morale. A Mill grounds Wheat into Flour, which is then turned into Bread at the Bakery.
	Chef Training	Food	6	600	Mess Hall	Feeding a large number of people requires discipline and organization. Chef Training unlocks the Mess Hall, where cooks prepare large amounts of Meals for hungry colonists.
	Energy Production I	Production	1	100	Solar Panel Wind Turbine	Getting the power back on is a major step toward rebuilding civilization. Solar Panels and Wind Turbines provide clean Energy in small quantities.
	Junk Recycling	Production	2	150	Mechanic Shop	Scrapper's side product, Junk is useful and even valuable for those able to recycle it. The Mechanic Shop converts it into mechanical Parts, which are required in advanced construction and item creation.
	Energy Storage	Production	3	250	Battery Rack Small Street Light Medium Street Light	Producing Energy without storing it can be a recipe for disaster. Repurposed Battery Racks can hold a decent charge and keep things running even when Energy production has halted. Street lights make the colony a much nicer place to live even during long dark nights.
	Battery Stacking	Production	4	300	50px Large Battery Rack Large Street Light	Producing Energy without storing it is just a waste. Tinkering with Battery Racks allows them to be chained together for even greater effect. They'll keep things running even when Energy production has halted. Large four-way street light cover a lot of ground during the night.
	Energy Production II	Production	4	300	Large Solar Panel Large Wind Turbine	High-end production and entertainment buildings require large amounts of Energy to function, which makes creating bigger power plants necessary. A Large Solar Panel can also fold itself to protect its panels during catastrophes and a Large Wind Turbine towers over most other colony structures.
	Industrial Mining	Production	5	400	Concrete Extractor Metal Extractor Plastic Extractor	Picking through construction materials by hand will only take you so far. Heavy machinery like Extractors will greatly boost your production but require both constant maintenance and large amounts of Energy to extract Metal, Plastic and Concrete.
	General Storage	Security	1	100	General Storage	Valuable goods deserve a proper place to be stored. A General Storage is a converted and reinforced shipping container able to withstand the elements and thieves alike.
	Hazmat Engineering	Security	2	150	Environmental Station 50px Nuclear Waste Storage	Clearing heavily polluted soil without proper equipment is a death sentence. An Environmental Station provides both the means to clear Pollution Deposits and store the waste into a Nuclear Waste Storage.
	Reinforced Gate	Security	3	200	The Gate	Approaching a reinforced gate makes anyone respect a society living behind it a bit more. Survivor groups are questioned in more detail before letting them join the colony. Sometimes, questioning can reveal important information about the group's conditions.
	Centralized Repairs	Security	4	300	Maintenance Depot	Keeping track of all repairs in a large colony is a hassle. A Maintenance Depot automatically fixes damaged buildings within its work radius provided it is staffed and supplied properly.
	Medical Center	Security	5	400	Field Hospital	There is no way to keep a large colony healthy with a simple Medic's Tent. A properly managed Field Hospital is both more spacious and effective in treating a wide variety of conditions.