The game is evidently inspired by Cliff Johnson's classic 3 in Three and The Fool's Errand, but not derivative: all twelve kinds of puzzles in the game are original, and they range from ingenious wordplay to logic puzzles. The plot is-- well, I'd rather leave you to find out on your own so I won't ruin any surprises. Suffice it to say that it's wonderful, unique, and very captivating. With many locations in the gameworld to explore, clever puzzles, and great graphics and animation, you'd be hard pressed to find fault with System's Twilight except to complain of some unfair puzzles (in a sense that they are very difficult). Fortunately, Andrew has posted solution to the most unfair puzzle in the game on his website, and you can also ask him personally for help. Best of all, the game is freeware as of January, 2000, so there is really no reason not to try it on your Mac emulator :) If you like Cliff Johnson's games, you'll love System's Twilight. Two thumbs up!