functional
functional is a puzzle game about math and abstraction.
Offers
What are keyshops?Demo (1)
Try this game before buying.
DLCs (1)
About functional
Start from scratch
Start with the simplest mathematical primitives. Everything is a function, and functions can be used to build everything else.
Solve increasingly complex problems
Use your previous solutions as black boxes, and use them as building blocks to build more complex solutions.
Compare your solutions
Compare your solutions against other players, and against your Steam friends, both in efficiency and simplicity.
Workshop support
Create your own levels and share them with the community.
Game details
Game details
Age ratings
Game modes
Languages
Features
functional price history
Lowest tracked price: £2.94 (Jul 7, 2026) · current best: £6.29.
functional reviews
62% positive reviews all-time.
functional — frequently asked questions
Where can I buy functional at the cheapest price?
Right now the cheapest offer for functional is £6.29 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price functional has ever been?
The lowest price KingsPrice has tracked for functional is £2.94 (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 can I get functional at a discount?
Create a free price alert on this page and KingsPrice will email you when functional 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
- Requires a 64-bit processor and operating system
- Storage: 200 MB available space
Recommended
- Requires a 64-bit processor and operating system
