Software, Flow, Ramps, Art and Theme.
The game is not perfect, but it has a lot going for it. Fun skillshot. I think the whirlpool stops the ball a little too long, it has two playfields and 3 flippers which is a sweet spot for a lot of pinball people I know.
LOTS of strategy. Has a token hard shot through the bumpers. Or you can try and hit disaster drop 3 times, or you can try to advance raft.
Stacking the 5x multiplier on the multiball, going for the vacation jackpot, making it to Wet Willies and then to Wet Willies level 2 all are very fun things to try and accomplish.
It's a non licensed theme that looks great. The game has the best topper in pinball IMO.
Great flow, great fun.
I know that the music gets knocked quite a bit on this one, but I don't have a problem with it. It is pre DCS.