Are SONY the first gaming company to have 4 systems on the go at the same time?

[kain_kusanagi]

VMEfinn said:

 

Sony:

PS2, PSP, PSP GO, PS3, PS Vita, Playstation Phone.   (Sony has at least 5 seperate gaming platforms as the PSP go is well...)

 

I don't consider the PSP and PSP Go seperate platforms. But I don't consider the DS DSi and DSi XL seperat either. PS Phone is debatable. I wouldn't count Windows Phone 7 as a Microsoft platform along with Xbox 360 even though it plays games too.

The way I see it Sony has 4, Nintendo has 3, and Microsoft has 1.