Like Silicon Zeroes, but free in your browser
Silicon Zeroes is an open-ended puzzle game by PleasingFungus Games, the makers of Manufactoria, released on Steam in September 2017 for Windows, macOS and Linux. You assemble circuits from components such as adders, latches and multiplexers, across more than seventy puzzles that run from simple introductions to fully functional CPUs. If that is what brought you here, digiwleea is a free, in-browser alternative with a different angle: you build a computer from the transistor up.
What Silicon Zeroes is good at
It is a polished, single-player puzzle game, and because the puzzles are open-ended there are many ways to solve each one. If it got you hooked on building a processor out of parts, you are exactly who digiwleea is built for. (digiwleea is an independent project, not affiliated with PleasingFungus Games.)
How digiwleea is different
digiwleea is free and runs in the browser with nothing to install. It also starts lower down: Silicon Zeroes hands you ready-made components like adders and latches, while in digiwleea you build the gates themselves from CMOS transistors, then the adders, latches, registers and RAM from those gates, and the simulator checks every part against its truth table before you reuse it. A guided 40+ level course ends with a working 8-bit CPU that you then program in assembly, with free theory lessons alongside and an AI tutor (Wleea). Silicon Zeroes is the better pick if you want a self-contained puzzle game on Steam; digiwleea is the better pick if you want to see inside every component, down to the transistor.
| Silicon Zeroes | digiwleea | |
|---|---|---|
| Price | Paid (Steam) | Free lab and Act I; Premium for the full course |
| Runs in | A downloaded game (Windows, macOS, Linux) | The browser, nothing to install |
| Smallest building block | Components such as adders, latches, muxes | CMOS transistors (build the gates too) |
| Structure | 70+ puzzles | 40+ level course + theory lessons |
| Ends with | Fully functional CPUs | An 8-bit CPU you program in assembly |
| AI tutor | No | Yes (Wleea) |
No sign-up is needed to start: open the lab and place your first transistor, or read the free theory course. The account (and the AI tutor) are optional.
See for yourself: build a logic gate from transistors in the simulator, then follow the path from sand to an 8-bit CPU.
Open the digiwleea lab →Frequently asked
Is digiwleea a good Silicon Zeroes alternative?
Yes, if you want to understand digital logic from the ground up. digiwleea is a free, in-browser simulator with a guided 40+ level course where you build every gate from CMOS transistors and work up to a real 8-bit CPU, with an AI tutor to help.
Is digiwleea free?
The sandbox lab and the first act of the course are free and need no sign-up. An optional account adds the AI tutor and cross-device sync; the full course and expanded AI tutoring are included in the monthly or annual Premium subscription.
Do I need to install anything?
No. digiwleea runs entirely in your browser, on desktop or mobile, and works offline once loaded.