Puzzle Pirates, frankly. Made by people who knew what they were doing, were extremely talented, independent, although eventually tried to hook onto Sega as publisher, almost killed the game and then re-purchased the game from Sega to continue as "re-indie" devs. Still going to this day with a stable player base of a few hundred. The game itself is very clearly hand-crafted and every one of the (few) developers left their mark on it. Feels completed and polished.