As it's Talk Like A Pirate Day tomorrow ( http://www.talklikeapirate.com/piratehome.html ), I did an article about the ScummVM adventure game engine for Symbian S60, based on the SCUMM engine used in Monkey Island. The phone I used was the E61, it has an absolutely perfect screen for these kinds of games:
http://www.allaboutsymbian.com/reviews/item/ScummVM_for_Series_60_3rd_Edition_Review.php
In case you don't know, ScummVM is capable of running game files from any of Lucasfilm/Lucasarts classic adventure games like Monkey Island, Loom, Maniac Mansion, Day Of The Tentacle etc. It can also run a few other non-Lucasarts adventures too. If you have the original game disks or CDs, dig them out and transfer them to your S60, you'll be able to use the files by installing ScummVM (ScummVM is free by the way).