Guardian Heroes for Sega Saturn. I know there was the GBA sequel, but it was terrible, and a very different style game.

There hasn't really been a good vehicular combat game in awhile, like Vigilante 8 or Twisted Metal

I also noticed there haven't really been any good couch party games besides Mario party; think Crash Bash, Pokemon stadium, fusion frenzy, and the like.

Titanfall 3

Freedom force 3

Pursuit force 3

New vegas 2

The first Deception game by Tecmo. A pretty basic game in concept: Invaders come in your castle, you set up traps, lure them into the traps. But- Something about the limiting view of first-person, combined with the poorly lit castle, chilling music, and dark story tone has never been replicated. Add on how you could customize your castle with extra hallways and rooms with special attributes, capture invaders to make your own monsters, or even use masks to change the way invaders react to you... mmm, now I want to play it again.

I tried playing the second, third, and Trapt, but everything after the first game switched to a more action-oriented third person view and started to shy away from the heaven/hell connection.

I wouldn't mind if it was a game outside the Deception IP. I just want the atmosphere back.

Tabula Rasa. It was a first/third person sci fi mmo shooter/rpg with craftable mechs, It lasted for a bit more then a year before it shut down, and no private servers have ever been created.

Gundam : Universal Century Online. Picture Star Wars Galaxies with combined arms mecha warfare. Start on foot, buy a jetpack, mine some ore, built a tank/jet/mech, fight in the war. It lasted about as long as tabula rasa before it shut down. It currently has no private server.

Firefall. First/third person sci fi mmo shooter/rpg with craftable mech suits. bla blah, shut down no private server ever created.

tl/dr: I want a new mech mmo. Or even just to be able to play my old favorite mecha mmos.

Cyberstadium Series: Basewars.

Sure, it was only 1 game, so maybe not a series, but as the name suggests, it was meant to be a series.

MAG from the PS3.

I'd really like to see another time-based drama similar to The Last Express. It had a lot of time-based events where you could run into particular passengers of the train in the hallways, and gained a strong sense of physical "presence" as people pushed past you in the halls using detailed rotoscope animations.

The Invisible Hours comes close - it's non-interactive, basically letting you play as a ghost cameraman watching the mystery.

CyberMage: Darklight Awakening

+1 for Populous.

But my answer to this every time is Red Faction (1, specifically. While I did enjoy Guerrilla, I want to see a throw back to more fully destructible environments on next gen tech).

Panzer Dragoon. I only played and finished Panzer Dragoon Orta for the XBox when it came out. I tried the included original game, but I had a hard time telling depth and perception with the old graphics.

Strange Adventures in Infinite Space

I'd like them to give 'Z' (Bitmap Brothers) another go.

Zork

Tokyo Xtreme Racer

And thankfully, they just released a teaser for a new one so I guess my wish is going to be granted!

arc the lad 2 twilight of spirits. Not the arc the lad series but the stories and themes explored in the particular game 2