God. I don't know, I've been gaming for over 25 years now, I got my first system when I was 6 for Christmas, C64, so damn no one knows.
I know had around 100ish legit games for the C64 by the time it when it the wardrobe, they started to get real cheap near the end, $5 (a weeks pocket money) each. Let's try a count:
C64: 100+
NES: 30ish
Sega Master System: 10-15
SNES: 40ish
Mega Drive: 15
Game Boy: 20-30
3d0: 7
PS1: 10-15
N64: 15-20
GameCube: 9
Xbox: 15-20
Xbox 360: 29
Now the hard one, the PC, do I count every PC I've owned or the latest one? mmm going back to my 486 days I'd say around... 200-250ish
So all up a crapton of money over the years, thankfully there were plenty of jobs going when I was younger.