MHRD
Image source: Steam store page
A hardware design game set in the 1980s. You join a startup called Microhard as a hardware engineer and work through its design specifications.
How you code
You describe circuits as text in the game's own hardware description language, wiring inputs, outputs and components together. Starting from simple gates you design multiplexers, adders, an ALU and memory, test each against its specification, and reuse finished designs until you have a working CPU. The included manual explains the language.
Details
Categories: Build-a-computer
Platforms: Windows, macOS, Linux
Cost: Paid
Language: MHRD hardware description language
Last verified: 2026-10-09