Research
This page is about in-game research. For technologies unlocked in Campaign, see Technology Tree
There are three research buildings in They Are Billions which form different technology tiers.
The first tier is the Wood Workshop. Within, you can find "Research Stone Workshop", which unlocks the second research tier, Stone Workshop. Using the Stone Workshop, the player can find their way to the third research tier via "Research Foundry" which enables construction of the Foundry.
Research times are listed in seconds; one in-game day is 95 seconds.
| Tier 1 ⇅ | Name ⇅ | Cost ⇅ | Research Time ⇅ | Description ⇅ |
|---|---|---|---|---|
 | Cottage | 350 Gold | 75 Seconds | Medium level dwelling for the colonists. Colonists provide gold and workers for the colony. |
 | Farm | 400 Gold | 75 Seconds | Produces food by harvesting grass field from the surroundings. |
 | Stone Workshop | 500 Gold | 75 Seconds | Allows researching for complex structures based on stone mineral. |
 | Market | 450 Gold | 75 Seconds | Can buy and sell resources. Automatically sells excess resources produced. Reduces the food needs of surrounding dwellings. |
 | Lookout Tower | 300 Gold | 75 Seconds | It has a great view range to detect enemies and other threats in the surrounding area. |
 | Great Ballista | 700 Gold | 75 Seconds | Attack Tower. Attacks nearby enemies by shooting large arrows |
 | Stakes Trap | 300 Gold | 75 Seconds | Sets a stakes trap that will cause damage to the enemies and will make them to walk slower. |
 | Sniper | 700 Gold | 75 Seconds | Snipers walk slowly and take their time to load their large rifle. However, Snipers have a very high attack range. With their incredible aim, they can kill most of the infected with just one shot to the head. |
 | Inn | 1000 Gold | 112.5 Seconds | +10% income in nearby dwellings. Allows hiring units for gold, including Engineering Center units without oil income. |
 | The Silent Beholder | 7000 Gold, 100 Wood, 100 Stone, 150 Iron | 120 Seconds | Reveals the entire map. |
 | The Crystal Palace | 6000 Gold, 150 Wood, 200 Stone, 150 Iron | 150 Seconds | Colonists: +60, Food: +800, Victory Points: +1500 |
| Tier 2 ⇅ | Name ⇅ | Cost ⇅ | Research Time ⇅ | Description ⇅ |
|---|---|---|---|---|
 | Stone House | 600 Gold | 75 Seconds | Highest dwelling for the colonists. Colonists provide gold and workers for the colony. |
 | Power Plant | 800 Gold | 75 Seconds | Provides a great amout of energy generating steam by burning combustible materials. |
 | Foundry | 1000 Gold | 75 Seconds | Allows the researching of complex buildings and units based on iron. |
 | Bank | 800 Gold | 75 Seconds | Increases the amount of gold generated by each colonists and surrounding dwellings. |
 | Stone Wall | 500 Gold | 75 Seconds | Strong walls that keep the colony defended from nearby enemies. |
 | Stone Gate | included in "Stone wall" | 75 Seconds | Stronger quality. Gates open and close automatically to allow friendly units to pass through the walls. |
 | Stone Tower | 500 Gold | 75 Seconds | Stronger towers made of stone. Units can be placed in these towers to be protected and extends their watch and attack range. |
 | Shocking Tower | 900Gold | 75 Seconds | Attack tower. Attacks nearby enemies, generating an electric pulse that must be recharged when triggered. |
 | Land Mine | 300 Gold | 75 Seconds | Single-use defensive device. Deals 500 damage in small AOE when infected walk over it. Can be configured to detonate within 0, 1, 2 or 3 seconds. |
 | The Victorious | 7000 Gold, 100 Stone, 200 Iron, 100 Oil | 150 Seconds | Oil Supply: -10, Near dwellings gold generation: +20%, Victory Points: +2000 |
 | The Academy of Immortals | 7000 Gold, 200 Wood, 200 Stone, 100 Iron | 150 Seconds | All units are veteran, Victory Points: +1000 |
| Tier 3 ⇅ | Name ⇅ | Cost ⇅ | Research Time ⇅ | Description ⇅ |
|---|---|---|---|---|
 | Advanced Farm | 1500 Gold | 75 Seconds | Produces food by harvesting grass fields from the surroundings. It can produce twice the amount of food from the same field than a basic farm. |
 | Advanced Quarry | 1500 Gold | 75 Seconds | Collects minerals like stone, iron, and gold from surrounding mineral seams. It can produce twice the amount of minerals than basic quarries. |
 | Advanced Mill | 1400 Gold | 75 Seconds | Generates energy for the colony. |
 | Oil Platform | 1200 Gold | 75 Seconds | Generates Oil. It must be placed over an oil pool. |
 | Engineering Center | 2000 Gold | 75 Seconds | Assembles and trains the most sophisticated units. Unlocks Lucifer as well. |
 | Radar Tower | 1000 Gold | 75 Seconds | Watches the surrounding area and alerts from enemies and other threats. Towers have a great range of sight. |
 | Executor | 3000 Gold | 75 Seconds | Attack tower. Attacks nearby enemies inflicting massive damage within an effect area of 0.6 cells radius. |
 | Wire Fence Trap | 900 Gold | 75 Seconds | Sets a strong barbed-wire fence that will cause damage to the nearby enemies and will make them to walk slower. |
 | Thanatos | 2000 Gold | 75 Seconds | Thanatos has a powerful rocket launcher with a very long range. It can annihilate dozens of infected people with a single shot. When the enemies are too close, Thanatos will fight face to face. |
 | Titan | 6000 Gold | 75 Seconds | This gentleman pilots a formidable killing machine. It has an ultra fast burst shot and a wide area of effect. Order him to chase infected and enjoy the show. |
 | Mutant | 6000 Gold | 150 Seconds | Fast melee attacker with huge HP pool. |
 | The Lightning Spire | 8000 Gold, 150 Stone, 200 Iron, 100 Oil | 150 Seconds | Energy: +800, Energy Transfer: 30 cells, Victory Points: +1500 |
 | The Atlas Transmutator | 8000 Gold, 100 Stone, 200 Iron, 200 Oil | 150 Seconds | Wood Supply: -20, Stone Supply: -20, Iron Supply: -10, Oil Supply: +40, Victory Points: +2000 |