STEAM COUNTER-OFFERS
STEAM COUNTER-OFFERS Save vs Steam
STEAM COUNTER-OFFERS
STEAM COUNTER-OFFERS Save vs Steam
Most popular searches
Call of Duty Black Ops 6
Fortnite Cobalt Star DLC
EA SPORTS FC 25
PlayStation Plus Essential 12 Meses
Farming Simulator 25
Gran Turismo 7
Baldurs Gate 3
Microsoft Office 365
DRAGON BALL Sparking ZERO
Elden Ring
Sorry, not have results for platform selected
See all results
PC
Xbox
PSN
Nintendo
Gift Cards
Software
PC
Gift Cards
Most popular searches
Call of Duty Black Ops 6
Fortnite Cobalt Star DLC
EA SPORTS FC 25
PlayStation Plus Essential 12 Meses
Farming Simulator 25
Gran Turismo 7
Baldurs Gate 3
Microsoft Office 365
DRAGON BALL Sparking ZERO
Elden Ring
Sorry, not have results for platform selected
See all results
The cheapest price is 3.93€ (-78%) at Kinguin with a rating of 4.5 (79.8k reviews) · Version Steam Key · Region Global · We compare prices at 2 verified stores with 2 active offers · Updated on 05/12/2025 25min. ago
Official stores are authorized distributors, and while their prices may be higher than Key stores, their reliability is 100%.
“Choose it if you don’t mind the price difference”Key stores are resellers and marketplaces, which is why they are usually cheaper than official stores. We only show the best ones, so you can rest assured. Plus, we offer our guarantee against any issues.
“Choose it if you’re looking for a great discount”( You have
)
( You have
)
The KEY format at Kinguin is the cheapest for the version from 3.93€
Buying at Kinguin saves you 78% compared to the official store
Users rate Kinguin4.5(79.8k) best, highlighting its reliability and fast delivery, with a price of 3.93€
At Gocdkeys our recommendation is to always buy the KEY format, preferably from Instantgaming due to its reliability. If you prefer the account format, which is cheaper, we recommend buying from Difmark.
See more

When the Tamageria Republic faces a crisis with the rebellion of Mainframe OMEGA, an artificial intelligence, they turn to their last resort: a nuclear attack to stop Mainframe OMEGA.
Countless casualties occur in the aftermath, and Commander Elina secretly activates "Project Tachyon" to avoid the danger of a nuclear winter.
Sigma, an agent of Project Tachyon, studies the future and travels back in time to solve problems based on their observations. However, they discover a shocking truth during their mission...
Engage in combat filled with extravagant action scenes as you wield an array of weapons in diverse situations.
Use melee weapons to block the enemy's barrage and use ranged weapons to subdue them from a distance.

Choose from over 200 powerful genes in 10 different categories and upgrade according to your preferences.
Unlock powerful synergistic effects by gathering various types of enhancement genes.

Watch out for malicious genes, a key element in this Roguelite that thrives on the blend of luck and skill.
As you equip more enhancement genes, your chances of manifesting a malicious gene will increase.
Be wary as you'll sustain harsh penalties if you fail to meet the requirements.

Switch up your combat style with an array of weapons that can be randomly obtained at certain stages.
Deal with your enemies strategically by adapting to each situation–use an electric saw that slices incoming bullets or an acid sprayer to weaken the enemy’s defense.

Find an efficient route to navigate the map that varies every time you play.
You can save your stamina to challenge the boss, or take on more risks for a greater payout. It is your choice.

Unlock and upgrade various weapons through quests.
More weapons will appear by unlocking them before each stage begins.
Modify your weapons and enhance by battle experience.

Giant mutants, the followers of the artificial intelligence Mainframe OMEGA, lie in wait to interrupt Sigma's advance.
Unlike normal enemies, the Giant Boss uses a variety of gimmick patterns to threaten you.
Upgrade your enhancement genes and collect various weapons to effectively combat the boss in any situation!

Every character, including the protagonist, has a hidden past, trauma, and unique personality traits.
Only Sigma, who has the ability to retain memories, can continuously travel through time to understand and forge deeper relationships with these characters and successfully complete the project.

Travel through time and gather clues from the future, then return to the past to unravel the truth.
Seemingly insignificant details overlooked in the past will deeply impact the future.
Collect the clues amidst an ever-changing landscape to successfully complete your mission!

It is a key that will allow you to download the game PROJECT TACHYON on your PC from official download platforms.
As of 05/12/2025, in United States, the best price we have found in our selection of online stores that include the key for PROJECT TACHYON on PC is €3.93.
The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download PROJECT TACHYON to your game library. The account format requires more complicated steps and is more prone to errors during activation.
The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought PROJECT TACHYON, and they will provide a new key. You can also contact us, and we’ll help you out.
Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.
Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.
If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.
At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.
There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.
In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.
| Release date | 02/14/2025 |
| Users rating |
|
| Steam comments |
Positive
Positive
(111
Comments)
|
| Categories |
|
| Tags | |
To win the tickets, your email in Gocdkeys must match your email in Discord.
The comment must be original, with a minimum of 250 characters, will be reviewed manually and can take up to 48h to be approved.
We use cookies to provide you with the best experience on our website. You can review our privacy policy By clicking "Accept All", you agree to the use of all cookies.
Share Gocdkeys URLs on gaming websites/forums, and we will grant you +120 Tickets
How does it work?
Received. Give us 48 hours to verify it and send you your tickets.
Set Price Alert
{game_name} for {game_platform}
We will notify you when...
Alert created successfully!
Error creating the alert!
The minimum price cannot be higher than the original price
The minimum price cannot be empty
The minimum price is not valid
You already have an alert created for this game
Use the Tickets to spin the Gocdkeys Wheel of Fortune and win free video games!
Before playing our Wheel of Fortune
Register!How to get tickets?
Use the Tickets to spin the Gocdkeys Wheel of Fortune and win free video games!
Unfortunately this game is not yet available in our wheel of fortune.
Try your luck with another game!
How to get tickets?
What do our users think of PROJECT TACHYON for PC Digital?
0
Speed through time - looped levels as Sigma, fighting rogue AI. Project Tachyon is a run-n-gun roguelite featuring a massive variety of weapons, time - warp abilities, and a variety of full-on boss encounters. Fast-paced mechanics will reward you for always moving, as well as running into everything that explodes.
Rate and comment: your experience matters!
You are registered as: