Pier Solar is from the Watermellon team, completely new game built from scratch.
I think you were thinking of Star Odyssey, which was a old translated/cleaned up version of a japanese RPG.
If you skip a couple of console generations (but still IMO retro) NG:DEV Team has made two games and is working on a third for the Neg Geo and Dreamcast systems. Fast Strikers and Last hope are their first retail releases and both a traditional Space-Ship Shooters with their new release, Gunlord, being a Shoot'em Up in the same vein as Supper Turrican or Contra.
The Dreamcast has also had a couple of other full releases over the years with two of them being Rush Rush Rally Racing, top down racer, and Wind and Water Puzzle battles, pretty funky puzzle game. There are a couple of others that I am sure I'm unaware of.
Links:
http://www.ngdevteam.com/
http://www.redspotgames.com/shop/ind...d&productId=19