180 - Mastertronic Added Dimension (1986)

Darts game with 3 game modes:- 1 player vs computer in 3 stage knockout, 2 human players head to head or 1 player round the clock in 60 seconds.  I used to play this during lunchtime against a former work mate who had a Speccy as a child...and I usually lost! (probably because darts in more of a northern thing and Windsor aka Chris Rose is from up north!)