King's Quest III and IV are my favorite in the KQ series. But overall I'd probably say the first Quest For Glory. It was such a great melding of Sierra adventure and RPG.

Couldn't agree more! I got into QFG1 at the time of Sierra's VGA point-and-click remake, and what a lasting impression.

The artwork, music, sense of humor, and character building - including being able to import your character and keep building your skill points through each successive game in the series - made it really special. Truly the golden years of graphical RPGs, IMO.

Both Manhunters. I've never seen anything quite like them. You'd watch a cryptic, low-tech surveillance-style scene play out, then travel to the scene and try to figure out who was who and what happened. Then on to the next scene to advance the plot.

I'm glad I'm not the only one who remembers those. For the longest time I thought only my brother and I had ever played them at all.

Just a shame the series ended on a cliffhanger. There was supposed to be a Manhunter: London, but it was unfortunately canceled.

The incredible machine!

I had forgotten this was a Sierra game! Another great one. Reminds me of this awesome game box: https://static.giantbomb.com/uploads/original/1/15693/139356...

King's Quest IV was good (it was the first one I played), but I think I prefer King's Quest VI. Things started to go downhill after that. However, the new King's Quest which got released on Steam is actually pretty good!

My intro to the series was Kings Quest VII, my sister and I loved it. It inspired is to buy the collection set with all the previous games. I think Kings Quest VIII was the death knell for that series. They attempted to make a 3D action game out of the series but it wasn't well executed and it meanwhile lost the charm.

I would've said Caesar III and/or Ground Control, but neither was developed by Sierra, only published. ¯\_(ツ)_/¯

Space Quest series!