Who worked on XXX?
Frogger
In addition to these official releases, there are numerous unofficial clones including Ribbit for the Apple II in 1981, Froggy for the ZX Spectrum released by DJL Software in 1984, Acornsoft's Hopper (1983) for the BBC Micro and Acorn Electron, A&F Software's Frogger (1983) for BBC Micro and ZX Spectrum, Solo Software's Frogger for the Sharp MZ-700 in the UK in 1984, and a version for the NewBrain under the name Leap Frog.