The Controller - Pong to PC. Wii takes step back, Dual Shock holds steady.

[polezo]

Like Fishy Joe said you really need to take in the type of input in to account when you talk about the evolution of gaming.

For example: sure the DS touchscreen may only count as one imput, but you could map buttons to positions on the screen (ala Elite Beat Agents) and it effectively creates several more.