Goa trance albums often featured brilliant downtempo/ambient tracks, usually my favorite tracks of all, sometimes refered to as goambient. These chillout tracks were much rarer among goa trance than classic trance, which had full albums of ambient-trance tracks. These are quite unique tracks that don't have much relation to modern downtempo chillout or psybient.
Here's a partial list as I remember/discover them. Feel free to message me if you think something belongs up here.