"what if it was just 1 guy... with 6 hammers?"
It is fun and addicting. You may get frustrated with some "wtf I totally hit him first" moments... You may end up buying a better mouse pad... You may end up buying a new mouse... Your friends may say "wtf is that" and then end up wanting to play...
All in all, a nice different style of gameplay mechanics and satisfying victories.
(although I wouldn't recommend it for short tempered people)