
PROJECT TACHYON
An exhilarating run-and-gun action shooting game based on a Roguelite! Travel through time with Sigma to thwart the uprising of artificial intelligence and fight for the future!
Offers
What are keyshops?Keyshops
Third-party resellers. Often cheaper, without official store support. Keyshop prices vs Steam →
About PROJECT TACHYON
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...
Dynamic combat action using melee and ranged weapons
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.
Roguelite gameplay system
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.
Experience unique battles by upgrading weapons
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 boss raid
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!
Engaging narration through Roguelite
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.
An intriguing story through time-traveling
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!
Game details
Game details
Age ratings
Game modes
Languages
Audio & text: Japanese, Korean
Text only: English, Simplified Chinese, Traditional Chinese
Features
PROJECT TACHYON price history
Lowest tracked price: €6.34 (Jul 7, 2026) · current best: €6.88 across 2 stores.
PROJECT TACHYON player count & reviews
86% positive reviews all-time · 1 peak players in the last 30 days.
PROJECT TACHYON — frequently asked questions
Where can I buy PROJECT TACHYON at the cheapest price?
Right now the cheapest offer for PROJECT TACHYON is €6.88 at K4G. KingsPrice compares 2 offers from 2 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price PROJECT TACHYON has ever been?
The lowest price KingsPrice has tracked for PROJECT TACHYON is €6.34 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
How many people play PROJECT TACHYON?
PROJECT TACHYON peaked at 1 concurrent players on Steam in the last 30 days (highest on Jul 9, 2026). The player chart on this page updates daily.
Is it safe to buy a PROJECT TACHYON Steam key from a keyshop?
Keyshops are marketplaces that resell game keys, usually below official store prices. The keyshops listed on KingsPrice deliver genuine Steam keys, but buyer protection differs from official stores — check the shop's rating and refund policy before buying. You can hide keyshop offers at any time with the keyshops toggle. Keyshop prices vs Steam →
How can I get PROJECT TACHYON at a discount?
Create a free price alert on this page and KingsPrice will email you when PROJECT TACHYON drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- OS: Windows 10
- Processor: Intel Pentium G630 @ 2.70GHz
- Memory: 4 GB RAM
- Graphics: Intel HD Graphics
- DirectX: Version 11
- Storage: 2 GB available space











