The only obscure game in my collection that I currently remember is Ascension to the throne which IMO, unlike most of the obscure games, is great. It's a semi open-world RPG ( similar to Gothic somehow in terms of overall feeling of exploration) with the turn-based combat system similar to heroes of might & magic series. It was a very addicting game and although I played it around 4 years ago, but I still remember it quite well.
Although it had some drawbacks like lack of any kind of voice acting, bugs and balancing problems and also one of the most meaningless and disappointing endings I have ever seen, but it was a game that quite held my attention while it lasted.