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Puzzle 4:
Answer page below

It's hard not to be tempted by parody. It will probably be a while until we can actually get online collaboration, but I was able to come up with some interesting variants of Minesweeper. You can try them out (as well as the standard game) this week:

Your puzzle, of course, is to figure out what the rules to the variants are. Shouldn't be too hard, although there are quite a few secrets to discover! If you'd like to have my Minesweeper game for longer than one week, please add my Minesweeper Gadget by clicking on this link -- I'll be adding new enhancements and variants as time allows.

Answer: http://solvepuzzles.googlepages.com/answers4