The scientific geniuses at Rapture have designed a type of vending machine that takes the useless junk one finds littering this beautiful place, and turns it into useful items, ammunition, and even tonics! These U-Invent machines serve as a crafting kiosk of sorts. Using them regularly is a great way to keep a constant supply of rare ammunition and other items not commonly found during regular exploration.
In order to use the U-Invent machines you encounter, you need to maintain a supply of components. Components are the everyday items one finds when searching corpses, crates, ashtrays, and every other type of searchable container in Rapture. Make no mistake about it, thoroughly searching the environment for the following list of items should keep you topped off with Automatic Hack Tools, Exploding Buck, and Heat-Seeking RPGs. These three inventions are indeed the tools to victory!
The following items can all be taken to U-Invent machines throughout Rapture (starting with the “Arcadia” chapter) and turned into valuable inventions. Those components marked with an “*” are considered rare and should be picked up whenever you have the opportunity.
|
Rubber Hose Battery* Brass Tube Kerosene Shell Casing Steel Screw* Alcohol* Empty Hypo Glue Enzyme Sample Chlorophyll Solution Distilled Water |
The following inventions are listed in order of appearance as you make your way through Rapture.
Automatic hack tool
Automatic Hack Tools allow anyone, no matter how unskilled, to hack electronic devices. Unfortunately they short out after a single use.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Rubber Hose | 4 | 3 | 2 |
| Battery | 4 | 3 | 2 |
| Brass Tube | 1 | 1 | 1 |
Exploding Buck x3
Exploding Buck is the inventible ammunition for the Shotgun. This powerful buckshot explodes on contact with a target, dealing extra damage to all targets.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Kerosene | 3 | 2 | 1 |
| Shell Casing | 2 | 1 | 1 |
| Steel Screw | 1 | 1 | 1 |
Armor-Piercing Auto Rounds x20
Armor-Piercing Auto Rounds are the inventible ammunition for the Machine Gun. These .45 caliber bullets are particularly effective against metal or armored targets, like Turrets, Security Bots, and Big Daddies.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Kerosene | 2 | 1 | 1 |
| Shell Casing | 3 | 2 | 1 |
| Brass Tube | 1 | 1 | 1 |
Antipersonnel Pistol Rounds x6
Antipersonnel Pistol Rounds are the inventible ammunition for the Pistol. These .38 caliber bullets are specially designated to neutralize non-armored targets—like Splicers.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Rubber Hose | 2 | 1 | 1 |
| Shell Casing | 3 | 2 | 1 |
| Steel Screw | 1 | 1 | 1 |
Lazarus Vector
A newly-invented chemical meant to restore vitality to dead vegetable matter. This item can only be created once, as it is a specific story item.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Distilled Water | 7 | 6 | N/A |
| Enzyme Sample | 7 | 6 | N/A |
| Chlorophyll Solution | 7 | 6 | N/A |
Hacker’s Delight 2
This Engineering Tonic makes it possible for you to gain Health and EVE every time you hack something. Splicing this tonic earns you more Health and Eve than the original model of Hacker’s Delight.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Alcohol | 5 | 4 | 3 |
| Enzyme Sample | 4 | 3 | 2 |
| Empty Hypo | 3 | 2 | 1 |
Booze Hound
This Physical Tonic makes it possible to restore small amounts of EVE by drinking alcohol. Normally, drinking alcoholic beverages would drain your Eve, but not with Booze Hound spliced!
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Glue | 5 | 4 | 3 |
| Enzyme Sample | 4 | 3 | 2 |
| Empty Hypo | 3 | 2 | 1 |
Bloodlust
Those who like to inflict their pain up close and personal will enjoy the effects of this Combat Tonic. With Bloodlust, you gain small amounts of Health and EVE when inflicting damage with the Wrench.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Glue | 5 | 4 | 3 |
| Enzyme Sample | 4 | 3 | 2 |
| Empty Hypo | 3 | 2 | 1 |
Heat-Seeking RPG x2
Heat-Seeking RPGs are the inventible ammunition for the Grenade Launcher. These homing missiles are the perfect solution for moving targets, delivering a devastating payload even around corners!
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Distilled Water | 3 | 2 | 1 |
| Kerosene | 2 | 1 | 1 |
| Brass Tube | 1 | 1 | 1 |
Trap Bolt x6
Trap Bolts are the inventible ammunition for the Crossbow. These ingenious bolts shoot out an electrified tripwire when fired into a wall.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Battery | 2 | 1 | 1 |
| Glue | 3 | 2 | 1 |
| Alcohol | 1 | 1 | 1 |
Electric Gel x25
Electric Gel is the inventible ammunition for the Chemical Thrower. Electric Gel deals electric damage to targets, and may send them into shocked convulsions. Also good for temporarily disabling machines.
| Invention Requirements | Qty | Hacked Qty | Hacked + Clever Inventor Qty |
|---|---|---|---|
| Distilled Water | 3 | 2 | 1 |
| Battery | 2 | 1 | 1 |
| Alcohol | 1 | 1 | 1 |