At least 30 years!
I remember playing GridRunner alsmost 30 years ago.....
A psychedelic 8-bit arena shooter featuring amorous ungulates and minotaurs in rainbow-coloured jumpers. The more you try to explain a Jeff Minter game, the more ridiculous it sounds. Llamasoft Minotron 2112 No need to dust down your Amiga or Atari thanks to the Minotaur Project For over 20 years, his company Llamasoft has …
Llamatron, Attack of the Mutant Camels and Trip-a-Tron (although the latter certainly suffered from a lack of sufficiently powerful hardware to give it a reall test...) - they ate up a large chunk of my life in the early 90s - thoroughly addictive, and it's awesome to see them back.
I'm still not getting an iThingy though....
I loved Llamatron but I couldn't get on with Minotron - because the control system requires fingers all over the place on the screen, the fingers get in the way and stop you from seeing what's going on so you just end up dying all the time. But maybe I just haven't got the proper 'knack' or something, because it's got amazing reviews on the App Store.