Don't even think, just buy it.
Seriously, this is a cartridge with 5 great games on it. Super Mario 1, 2 and 3 are great on their own. Add in the lost levels (SMB 2 in Japan), AND Super Mario World, you've got something that will keep you entertained for hours. Also, all the NES games have had their graphics scaled up to 16-bit.
This is a great deal, and if you own an SNES, you should have this.
Reviewed by: Lawrence Siminski from NYC on 11/3/2012