After the success of the C-64, Commodore brought out the Plus 4, C-16, and C-116. These computers didn't really offer anything new, but the Commodore 128 does. It's really three computers in one: the well-known C-64, with mountains of software available for it; also, it contains a new computer based on the "success chips11 (the 6510 (6502), VIC, SID, 6526, etc); and last, it is a CP/M computer. In total, it's a brand new computer with lots to offer.