Mark Jeffries About Roles Name : Mark Jeffries Software Role Publisher Type Year Jet Set Willy: Spectrum Computing (Unknown) Spectrum Computing Arcade: Platform 1984 Jet Set Willy Editor (Unknown) Spectrum Computing Utility: Game Editor 1985 Change Request You can request changes or additions here. You can upload files. All change requests are actioned as quickly as possible and you will be informed of the result. Details Files Your Name * Email * Details Your browser doesn't have Flash, Silverlight or HTML5 support. Submit Thank you for your change request. We will respond as soon as possible.