Mastermind RK

Mastermind RK is a little cross-platform game for various classic Z80-based computers, written in C using the z88dk compiler (www.z88dk.org).

Your goal is to break a four-digit colour code in as few moves as possible.

The compiled program is a little over 8K in size, so it usually requires the target machine to have at least 16K RAM.

Currently, 81 target systems are supported, including Mattel Aquarius, Sinclair ZX80 and ZX81 (with a separate Chroma colour version), ColecoVision, various Robotron computers, Philips P2000 and VG5000, and many more.

2025-09-15:
- New targets supported: Mattel Aquarius Plus and Visual 1050
- Mattel Aquarius: Colours improved.

Project Samples

Project Activity

See All Activity >

Follow Mastermind RK

Mastermind RK Web Site

Other Useful Business Software

MongoDB Atlas runs apps anywhere

Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.

Start Free

Rate This Project