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Fibonex

Fibonex

English supported Lowest recorded! Simulation Strategy
10%$7.99 $7.19

Sale ends

Turn numbers into firepower. Build conveyor lines, calculate the ammunition your towers need and defend your Core in this single-player factory and tower-defense game. Reach the first boss, keep going in Endless, or experiment in Sandbox with or without enemies.

Should you buy?

It's at its all-time low

This is about the cheapest it has ever been, so buying now is unlikely to leave you with regrets.

Lowest recorded$7.19Now at the lowest
Sales in the past year1 times
Typical discount10%Up to 10%
This sale ends in6 days left
Big Steam saleD-4Steam Scream Fest
US Steam price$7.19Korea 18% cheaper · ≈₩9,524

This is for reference, based on past price records, and doesn't guarantee future prices. Prices from before Wish9 started tracking and the all-time low come from IsThereAnyDeal.

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Price history

$6.19$6.69$7.19$7.69$8.1910/23 15:0010/23 21:0010/24 03:0010/24 09:0010/24 15:00Steam all-time low $7.19 (ITAD)2026-10-23 15:30 · $7.19 (-10%) (IsThereAnyDeal history)2026-10-23 19:05 · $7.19 (-10%)

Small hollow dots are price history from before Wish9 started tracking, taken from IsThereAnyDeal. A dot appears only when the price changes.

Trailer and screenshots

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My PC vs. requirements

MinimumRecommended
Graphics card NVIDIA GeForce GTX 750 Ti / AMD Radeon RX 550, 2 GB VRAMNVIDIA GeForce GTX 1050 Ti / AMD Radeon RX 560, 4 GB VRAM
Processor Intel Core i5-6500 / AMD Ryzen 3 1200 or betterIntel Core i5-8400 / AMD Ryzen 5 2600 or better
Memory 8 GB RAM16 GB RAM

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About this game

DeveloperFibonexia
PublisherFibonexia
Released22 Oct, 2026
Languages
English German

Full audio · Listed languages are supported in the interface, subtitles, or audio (at least one).

Turn numbers into firepower

Fibonex is a single-player factory-building and tower-defense game where your production line is also your ammunition supply. Mine numbers, route them along conveyor belts and combine them in Math Machines. Feed the results into Ammo Makers, supply your towers and protect the Core.

Build a factory that can fight

The right number is part of the defense. When a wave calls for different ammunition, your factory needs to deliver it. Change a calculation, split a supply line or expand production to keep more towers supplied. A powerful weapon still needs a working route from the source to its input.

Research new tools, upgrade machines and bring different tower roles into your defense. Balance production and transport as enemies approach from different sides. Use the preparation time between waves to rebuild, or start the next wave when you are ready.

Reach the boss, then choose what comes next

Math Wars begins with a guided introduction and a compact sequence of goals leading through ten introductory waves to the first boss. New enemy types ask you to rethink your setup along the way.

After the first boss, finish your run or continue with the same factory in Endless. If a wave goes wrong, the saved preparation checkpoint lets you retry with time to adjust your defenses.

Make room for experiments

Sandbox opens the building and research toolbox for free construction and upgrades. Play with or without enemies, explore projectile and light systems, or work on a factory at your own pace. Six optional experiment ideas give you small goals, from making a seven to keeping both Splitter outputs moving.



  • Choose industrial artwork or mathematical diagrams.
  • Look up machines, their inputs and practical tips in the illustrated Block Wiki.
  • Play locally with mouse and keyboard, save your factory and return to it later.
  • English and German interface. Math Wars and Sandbox are included, with no in-game purchases.

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FAQ

QHow much does Fibonex cost right now?

Fibonex costs $7.19 right now. That's 10% off the regular price of $7.99.

QWhat is the lowest price ever for Fibonex?

Based on Wish9's price records and IsThereAnyDeal history, the lowest price is $7.19.

QShould I buy Fibonex now?

The current price ($7.19) is at or very close to the lowest price on record. It has gone on sale 1 time in the past year. The next big Steam sale, the Steam Scream Fest, starts in 4 days. This is for reference, based on past price records, and doesn't guarantee future prices.

QWhat are the recommended and minimum specs for Fibonex?

Recommended: Graphics card NVIDIA GeForce GTX 1050 Ti / AMD Radeon RX 560, 4 GB VRAM, Processor Intel Core i5-8400 / AMD Ryzen 5 2600 or better, Memory 16 GB RAM. Minimum: Graphics card NVIDIA GeForce GTX 750 Ti / AMD Radeon RX 550, 2 GB VRAM, Processor Intel Core i5-6500 / AMD Ryzen 3 1200 or better, Memory 8 GB RAM. Save your PC specs on Wish9 to compare them with this game instantly.