Obsession does theme so well - not just in the art and text, but in the mechanics. Hosting a gauche American heiress will bring you oodles of cash, but tank your reputation. Your peers will admire you for bringing the old war veteran to your garden party, but he’ll require extra servants to help him get around.
The round-to-round gameplay is solid and satisfying, but it’s the theme - how well it executes its theme - that keeps Obsession on my shelf.