Which is the most significant (important) console in history?

[zorg1000]

GProgrammer said:

Atari 2600

#1 It launched consoles into the mainstream
#2 Most dominant console compared to its contemporaries in history, for the ps4 to attain the same dominace it must sell at least half a Billion, which is not going to happen

the only reason i didnt go with Atari 2600 is because it also killed the market it created.