The Infected How To Find Tech Blueprints

Slasher's Keep All Potions and Alchemy Vessel Combinations Guide

The scope of this guide is simply to help players that are having difficulty finding Tech Blueprints. Much of the information is compiled from posts by helpful community members.

Intro and Thanks to Contributors

Many players have difficulties finding tech blueprints and when they are not found, the player is often convinced that there is a bug. Though there have been a couple bugs along the way, in most cases the blueprints are there and just simply not found. I hope that this guide will help those that do not know every nuance and how to best find the blueprints. The info ahead comes from my own experience and also from posts by many helpful community members. I will do my best to revise this guide as more helpful information and helpful suggestions are received and if any game updates change the tech blueprint system. Obviously, this guide needs to be fully correct in order to help others effectively, so if anyone sees a statement that differs from their own experience, please leave a comment below. I am also always on the lookout for more screenshots of blueprints that are found in unusual places.

I want to give the following players my special thanks for their contributions:

Fotolit- for creating the awesome village maps and allowing me to use them in this guide.

Thanks to Jaunitta, Xynth, shGaming599 and Beartlaoi for their support and providing screenshots.

Without your contributions, this guide would be lacking.

Thanks to the following players for adding helpful information in the comments section that lead to further edits:



Geography and Spawn Pattern

As there are currently 12 total techs, it is important to know that they all spawn inside buildings that lie within 6 villages (In my experience, I have never seen a BP spawn outdoors). Each of the 6 villages will have 2 blueprints. To reiterate, no more or less than 2 tech blueprints spawn per village.

This map highlights the village locations as they can be difficult to identify in-game.

The techs will spawn randomly in each village upon each new gamesave creation and they will remain in their original spawn location even though other village loot respawns every 10 days.

Each time a new game is created, they will randomly spawn in different buildings compared to another save. Therefor, asking another player where they found a specific tech is moot because it is more likely than not that a particular tech will spawn in the same location.

Though there are other tips mentioned later, one big tip that I believe is essential when searching for Tech Blueprints is to keep track of how many you find in each village. While doing so, you will know which village(s) to revisit if you must leave for whatever survival reason during a BP search.

Exploring Villages and Identifying Tech Blueprints

As previously stated, there are 6 villages that each have 2 blueprints. Once you get to a village, it is important to search EVERY building if you want to acquire all blueprints. Most buildings that can be entered have the potential to have a blueprint and there are a couple types that I will note at the end of this section that do not, in my experience.

@Fotolit has created an awesome collection of village maps that identify each building in each village and was kind enough to give me permission to use them in this guide. You can also view them here which includes a link for downloading the hi-res maps:

When attempting to find Tech Blueprints, it is always best to have a light source. A torch is good but the yellow helmet light is best. Even in daytime, this will help since there are no light sources in the houses.

Tech Blueprints appear as bright gray books that are always standing upright and will stand out compared to other books when found on a bookshelf. When found on a bookshelf, they are usually singular. No need to scan every book in a shelf as they will stand out and not be within the other stacks of books but they can be close to them.

In my gameplay experience, the majority of tech blueprints are found in bookshelves as depicted here:

As you can see, they are difficult to see in the dark.

Lighting definitely helps spotting blueprints.

This one gets a little lost in the shuffle.

However, some blueprints can also be found sitting on other objects as noted in these cases:

There have been reports of BPs spawning in other difficult to notice spots such as on couches, under tables, on top of bookcases, and even outside of buildings on a table, etc. and we need screenshots of these, so please post them Here and I will happily add them to the guide.

When acquiring a tech, it will automatically be learned by the player and will not take up any storage. To see the list of techs, open your inventory (“i” by default) and press the gears icon at the top of the screen.

Notice in this case that only 8 of 12 have been found as noted by the check marks next to them.


It is very important to keep track of how many you find in each village.

If you are missing blueprints, you need to know which village to return to as opposed to having to re-search all villages.

You will not find more than one BP in a single building

In my own experience and no other instances have been reported of more than one tech blueprint being found in a single building.

When searching villages you will want to keep track of which houses and buildings that you have covered.

Some will simply keep both doors open to buildings (that have them) but all doors will close upon reload. Many players will place a ghost construct in front of the house or building. Be absolutely certain that you have fully searched that building or it will defeat the whole purpose of marking it. Use Fotolit’s maps to their full potential.

In all of my gameplay, I have never found tech BPs outside of buildings, in bathrooms, empty houses like this one:

Nor have I found any in attics.

This is it guys!! I am sure that you will love The Infected How To Find Tech Blueprints guide that we have shared with you. We are always open to discussion and suggestions from you. Just let us what you thought about the guide in the comment section.

Also, we would like to thank Shinigami. He is the one behind this wonderful guide.