Two days ago I finished the 350th puzzle in Pandora's Box for Windows. Pretty good puzzle game and decent variety. I found a copy earlier last year and kept doing a couple puzzles every week. Most can be completed in a couple minutes while the last 3 trickster (boss) puzzles can take over 20 minutes each. There is also a Game of the Year edition which has 400 puzzles, which translates into an 8th boss area of 50 maximum puzzles - I may seek that out one day although in practicing some of the puzzles there's some replay here and plenty of time to do so.