What I've got in mind is something in the style of Sierra On-line's old DOS games: story as the main focus, some puzzles, not heavy on the battles but not fluffy, not sims/conquest games/dungeon crawlers... hopefully you get the idea.
If you can recommend any, I'll be grateful. Not fussy about license. I just want to adventure. (Actually other recs would be good -- I'm new enough to the whole Mac software-finding process that I'm probably missing resources and could benefit from help.)