Sierra Games: I'm thinking of...

[Rudy]

Hint: Different developer.

[Rudy]

*bump*

[Tawmis]

I think ye may have killed the game... a different publisher... is the game fairly obscure or well known?

[Collector]

Or a game that Ken would not think of as a Sierra game?

[Rudy]

Well known and definitely considered a Sierra game (by Ken Williams), lol.

Next hint: there are many different color combinations, and it opens doors and locked items.

[Tawmis]

You realize, despite similarities, Legend of Kyrandia is not a Sierra game, right?

[dotkel50]

I was thinking the same thing.

[Rudy]

You realize, despite similarities, Legend of Kyrandia is not a Sierra game, right?

Legend of Kyrandia is not a Sierra game???

Nope, I wasn't thinking of that

Hint: New York

[Tawmis]

Manhunter: New York.

If I am right - remind me of the puzzle - because I am not clearly remembering one where you need to collect several colors to open several doors?

EDIT: Wait, you said a different division of Sierra - I think Manhunter was the regular division?

[Collector]

I think Manhunter was the regular division?

Nope. Not even a Sierra company. Sierra was just the publisher for the developer, Evryware, even though they used Sierra's proprietary AGI to develop the games. Evryware had done Sierra Championship Boxing for Sierra, previously. It was the studio started by the Murrys. They went on to develop games with other publishers, most notably their The Ancient Art of War Series. Rudy is right, though. Ken would think of it as a Sierra game, in spite of it being developed out of house.

By the way, Evryware still exists. http://www.evryware.com/

[Rudy]

Stepped right into the trap

No, it is not Manhunter: New York. Which other Sierra game has "New York" in it?

[Rath Darkblade]

Uhmm... Gold Rush?

[Rudy]

I'm surprised nobody has found it yet. Ok, here's the item I'm thinking about. Which game does it belong to?

[DeadPoolX]

Rama

[Rudy]

Rama

Of course!
"This place is huge": gigantic spaceship
"different developer": Dynamix
"unlocks doors and other stuff": doors in the octospider lair, wall panels, pedestals,...
"many other color combinations": they're scattered all over the place clogging up the inventory when you find them all.
"New York": the biggest city of Rama, where all the jewels are located

Take it away, DPX.