Saboteur 1 and 2 are excellent Amstrad CPC games written by Clive Townsend, edited by Durell Software, which I play when I was young (a long time ago). Excellent but sprite animation was a bit slow. But today this slowness is no more thanks to theALFEST as shown on CPCWIKI, you can see it in this vidéo on Youtube of Saboteur 2 with about a 300% speed boost of the animation (see below).