Quantic Dream's biggest hit, HEAVY RAIN, has sold 5.3 million units since launch. 

Here's what PushSquare had to say...

"Back when it released in 2010, Heavy Rain was looked upon as one of the most experimental titles in Sony’s portfolio. While it built upon a lot of the groundwork laid in PlayStation 2 game Fahrenheit (or Indigo Prophecy, depending on where you’re from) its story-driven murder mystery was unlike anything available at the time."

Source

This very well may include both versions (though we know the game sold about 3.5m on PS3 alone). What is noteworthy, however, is the fact that, in just over 6 months, HEAVY RAIN sold 800K more. 

As it stands, the game was a solid hit for Quantic Dream and the PlayStation 3!

**NOTE ** - We will not be discussing anything regarding the recent events surrounding the company. This is just to discuss HEAVY RAIN's current sales total. Ignoring this Note may result in a moderation! 

Don't even know who made it let alone what happened. So I won't be talking about it.

Impressive sales though. I remember it was big on this site as it was coming out. Glad it did so well.

I will assume without searching that this released on the PS4 as well?

5.3 million SHAUN!'s

Anyway, good sales.

That's a shame.

So 3.5m + 800K = 5.3m?! Or am I missing something?!

Good game, deserves all the sales that it gets.

4.5m as of June 2017.

I really enjoyed the time I spent on this game. Great game. Unfortunately I never got around playing Beyond two souls, and to b honest, Im not even sure why...

Don't forget all the JASON!'s :P 

My fondest memory of this game is the music, it was really beautiful. Glad the game sold well, these are amazing sales for a story driven game.

Locking.