Yep, I think the older games are closer to 'gaming' machines. You get a fairly short ball time to complete some (seemingly) simple tasks to achieve free games. If you don't succeed you feel compelled to put another 20 in the slot and try again.
New games, unless you are completely incompetent, give you a fairly long ball time to achieve a large number of convoluted and involved tasks after which you may or may not achieve a free game, depending how good the players before you have been.
I prefer the older games for their addictive power and simple objectives, but also enjoy playing the newer games for their depth and need to learn involved rule sets.
cheers
Ian
