If you so much as flicked through a PC gaming magazine in the mid '90s, you'll probably recognise the name Ecstatica. Created by Londoner Andrew Spencer and published by Psygnosis, the series spawned two instalments: the first released in 1994 and is a medieval-themed survival horror. The second arrived in 1997, and while it's very distinctly an Ecstatica game by dint of its art style, it dialed back the horror elements quite a bit.
That art style is pretty crucial: instead of polygonal character models, Ecstatica's engine used ellipsoids, which are, well, roundish. Bulbous even. Rather than paraphrase the formula-ridden Wikipedia page for ellipsoids, it's probably easier just to show you this:
