His first experience with a computer was when he was 13, his first computer was a Sinclair ZX1t he bought in 1981.
His first game, Namtir Raiders for the ZX81, gained its name from his surname reversed. He first drew attention with his games Bear Bovver and Match Day for the ZX Spectrum. As of March 2007, three of the top twenty games listed at World of Spectrum were written by Ritman: Head over Heels, Batman and Match Day II.
In 2014 Ritman appeared in the documentary feature film From Bedrooms to Billions, which tells the story of the British video game industry from 1979 to its release.
- Namtir Raiders, Artic
- Cosmic Debris, Artic
- 3D Combat Zone, Artic
- Dimension Destructors, Artic
- Bear Bovver, Artic
- Match Day series, Ocean
- Batman, Ocean
- Head over Heels, Ocean
- Monster Max, Rare/Titus 
- Super Match Soccer, 1998
Ritman also worked on two other football games that were not published:
- Final Whistle was developed for the Razz arcade system, but was cancelled as it looked like an improved version of Match Day II not suitable for arcade games.
- Soccerama was developed for Nintendo Entertainment System, but did not pass Nintendo's quality control due to bugs.
- Ritman bio at gamasutra.com
- "Visitor Voted Top 100 Best Games". World of Spectrum. Martijn van der Heide. Retrieved 27 March 2007.
- "Interview with Ritman at amstradmuseum.com". Archived from the original on 7 June 2009. Retrieved 4 November 2007.
- Retro Gamer magazine (Spanish edition) issue 19, pages 136-141
- Jon Ritman's website
- Interview with Ritman at crashonline.org.uk
- Information at World of Spectrum
- Ritman interview at computeremuzone.com
- Ritman interview at tacgr.emuunlim.com
|This biographical article relating to a video game specialist is a stub. You can help Wikipedia by expanding it.|