What it is
Tiny Logic is an in-development simulation and educational game where every logic gate is simulated and circuits genuinely compute. Players build from basic components such as batteries, LEDs, and transistors all the way up to their own CPU running real code. The game includes TINY-32, a 32-bit RISC-V computer made of over 93,000 transistors that can run DOOM at full speed.
From the developer
In the developer’s own words, from whoismuzzy.itch.io.
Every gate is simulated. Every computer you build actually computes. Start with a battery and an LED, wire up transistors, and keep going until your own CPU is running your own code.
No emulator underneath. TINY-32 is a full 32-bit RISC-V computer made of 93,338 transistors. It passes the official RISC-V test suite and runs real DOOM at full speed. It's free and open source: tiny-logic-doom · tiny-nes
Early access is half the price of the full release , includes every update , and every itch.io buyer gets a free Steam key when it launches. The price goes up at the Steam launch.
Read more
Solo project, built with its players. Talk to me on Discord or Instagram @whoismuzzy .
Installing
Windows: Defender may flag Tiny Logic as Trojan:Win32/Wacatac.C!ml . It's a false positive from the cloud machine-learning scanner (the "ml"): the engine compiles your circuit into machine code while you play, which looks unusual to new-file heuristics. Your PC's virus definitions find no malware, and every build is sent to Microsoft for review. Code signing is coming.
Make a folder, for example C:\Games\Tiny Logic .
Windows Security → Virus & threat protection → Manage settings → Exclusions → Add an exclusion → Folder, and pick it.
Extract the zip into that folder and run TinyLogic.exe . On "Windows protected your PC," click More info → Run anyway.
Already deleted? Windows Security → Protection history → Tiny Logic → Actions → Restore. Prefer not to add an exclusion? Totally fair: wait for the signed build, or use the itch app .
Mac: not notarized yet. Right-click the app → Open. If blocked: System Settings → Privacy & Security → Open Anyway.
Linux: extract and run (X11 and Wayland). Needs glibc 2.38+ for now (Ubuntu 24.04, Debian Trixie or newer). Older distros are supported from the next update.
Requirements: any 64-bit Windows, macOS (Apple Silicon or Intel) or Linux PC from the last ~8 years with 8 GB RAM. 4+ cores recommended for the big CPUs and DOOM.
Privacy: anonymous stats and crash reports are sent only if you say yes, and you can change it any time. Privacy policy .
Editor takes
“Minutes-per-session seems short, but LED-to-RISC-V is a strong hook — half-price early access and a free Steam key pace the buy-in nicely.”
“Every gate simulated and no emulator underneath means the DOOM aha is earned, though the antivirus false positive is an unfair first puzzle.”
How to play
You start with simple components like a battery and an LED, then wire them together into transistors and logic gates. By building and connecting modules, you gradually construct a working computer that can execute your own code, with every transistor simulated rather than emulated.
Tips
- Start with simple battery-and-LED circuits to learn how current and signals behave before building larger logic.
- Test each small module before connecting it into bigger systems, since every transistor is simulated and mistakes are easier to find early.
- Use the open-source TINY-32 and example projects as reference when designing your own CPU.
- Work in short sessions and iterate on small parts of your build; the average session is just a few minutes.
- If Windows Defender flags the game, add your install folder as an exclusion — the alert is a known false positive from the circuit-compiling engine.
Questions
Is Tiny Logic free?
No, it costs $9.99 USD on itch.io during early access. That price includes every update, and every itch.io buyer gets a free Steam key when the game launches.
What platforms does it support?
It is available for Windows, macOS, and Linux. The recommended requirement is any 64-bit PC from roughly the last eight years with 8 GB RAM.
Why does Windows Defender flag the game?
The engine compiles your circuit into machine code while you play, which can trigger a cloud machine-learning false positive. The developer says no malware is found and code signing is planned.
Does it really run DOOM?
Yes. The open-source TINY-32 is a full 32-bit RISC-V computer made of 93,338 transistors that passes the official RISC-V test suite and runs DOOM at full speed.
Is the game finished?
Not yet. It is in development and currently in early access, with the price expected to go up at the Steam launch.
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