I was dissapointed that Wizard of Wor didn't have the 'organ music' and some of the sounds were wrong.
Timber seemed to be a bit off with the music as well...
Hard Drivin's controls seemed a bit 'off' but then again I was using a PSX Dual Shock controller...

I played Mortal Kombat II/3, Gauntlet 2, Xybots, Narc, Timber, Total Carnage, Pit Fighter, Wizard of Wor, Xenophobe, Primal Rage, and Hard Drivin'.

Having played them, and listing a 'few' issues I had, I still think it was worth pre-purchasing. My 'ancient' 900mhz CPU can't do a few games in MAME and they're 'playable' *Gamecube version* plus the controls are set up nicely...

I do think the '1st' pack was better than the 2nd, but I think both are worth $20 each...