Captain Rainbow - Nintendo's forgotten but pretty good game. You are Captain Rainbow and need to grant wishes for Nintendo's B-Tier characters who are now fat, lazy and no longer care about life.
Master of Orion - it has a small core following but I wish it was more popular. The IP has had 4 games released so far.
Original game - 1993 - Pretty good for it's time and brought in most of the 4X concepts.
MOO2 Battle At Antaries - 1996 - Absolute masterpiece. Some people still consider it to be the best 4X game of all time.
MOO3 - 2003 - Pure garbage. It tries to be a better original game but misses all the charm of the original game. It also has zero of what made the 2nd game so great.
MOO4 Conquer the Stars - 2016 - I have bought this and will play it soon. From what I've read and heard/seen about this game, it plays like MOO2 mostly but with a few major changes. It looks pretty good.
The 4X genre is pretty niche to begin with though also.
Sid Meiers pirates was released in 1987, had a remake in 1993, and another remake in 2004. We haven’t gotten anything like it since. Pirates 2004 is one of my favorite games of all time, but was always in the shadow of Sid’s more popular series, Civilization.
Pirates back in the day was super popular. It was the best open world game ever made at the time. However since then I agree it's just been slowly forgotten. I have to say the 1987 original and Live the Life were pretty good. I played a lot of the PC original and NES port back in the day also. Pirates Gold on the other hand was really garbage.
I do wish this IP got a resurgance in popularity.
Good point and click adventure games
The never sold amazingly well from day one. Even in their Monkey Island 2 / Myst heyday they never broke sales records. This always disappointed me as there's some really good story telling and humour in many of these games. Telltale kicking the bucket is further proof of this in modern times. Sure Telltale was internally corrupt but the other contributing factor is they don't sell enough anymore to break even if the production costs are high.