I lack the time to construct a full-fledged review of RtK, but having finished the game, I want to share some of my opinions on it.
Plot
RtK has a strong plot, and Ray's touches can be seen throughout. There are moral decisions to make, and although the plot is strictly linear, it has enough variety and subplots to keep the narrative interesting. The pacing is great, and the chapter format clearly divides the action from character to character and setting to setting.
Presentation
The graphics and sound in RtK are amazing, some of the best I have seen in an RPG. The True3D engine delivers great character animations, and the pre-rendered backgrounds are all beautiful. The big problem here is with camera angles, which can be very confusing in small areas like the Krondorian streets and its sewers. The musical score is at times haunting, at others envigorating, and always of the highest quality. The voice acting is also very professional, and the lip-synching within the game adds a nice touch. The interface is very usable, and only becomes ponderous when pouring through character inventories. My only complaint in this area is the entirely stupid interface for selecting 'books' of saved games... The bookshelf graphic, complete with hunt-for-the-hotspot options, is a waste of time.
Combat
One of RtK's true strong suits is combat. The flawless transformation from normal exploration to combat is unique, and the graphics engine handles all the animation and spell effects beautifully. There is great strategic variety while in combat, which is helpful. I beat the game without ever using a bow, but relying on fire oil, James' combat prowess, and my magician's spellcasing abilities.
Miscellaneous
The extras in RtK, such as the lockpick and alchemy system, are also interesting. Lockpicking and disarming traps, while not used often after the first few chapters, is a fun challenge, and a twitch reflex test is nice after all that walking... As for the alchemy system, I must confess: I never even used it. I sold all alchemy supplies as soon as a got them, and was never really in need of extra potions until the last two chapters, when I ran uncomfortably low on healing supplies (in interesting sidenote: there is no magic spell for healing, an obvious oversight on the part of PyroTechnix. Leaving healing to the alchemist doesn't make sense when your mage should be able to cast a healing spell). However, the system is there if the player wants to pursue that course. The game was well made, and did not crash on my system a single time, although I was stuck in endless combat once or twice, when my lone character (Solon) was paralyzed by Goblins who could not actually hurt him. Also, it seemed too easy to make money, as about halfway through I had the best armor and weapons for my characters, and 60,000 gold left over! (However, should agents of the king ever have to worry about not being able to afford goods? Of course not.)
Conclusion
Return to Krondor will please all fans of Ray's books, as it offers a great immersion into the world of Midkemia. RtK suspends time and invites you into a colorful, beautiful world of intrigue and danger, and rewards the player with a fantastic plot. It is shorter than normal RPG's, and not a hardcore stat-management game, but it tells a wonderful story and should not be missed.