They did not said when that 4 mil was reached.
It was more like an oopsie moment during the Zevent weekend at the start of September. As the event takes place in Montpellier (same city as Sandfall), the the opening concert had some Clair Obscur music and most of those streamers living in Montpellier are already friends with the devs (they were invited in the studio for a huge party).
So a few devs went to the Zevent to offer gifts and answer questions and that when Antoine Daniel asked about sales. The answer was 3.3 and 4.4 at the same time, then they looked at each others and said "officially 3.3, in reality 4.4).
But they did not stated when those numbers were achieved.
Some ref (all in french bien sûr !)
The sandfall crew speaking with Antoine Daniel
Clair Obscur and Orchestre Curieux at the concert
First interview they gave with DamDam, the streamer who invited them to the event
Dremor@lemmy.world 17 hours ago
Well, now that everyone who want to play day one bought it, the only remaining market are !patientgamers@lemmy.world that are waiting for a sale to buy it.
And considering it is on the game pass, 4.4 million is quite good.
PerfectDark@lemmy.world 16 hours ago
Amazing to see for a turn-based game, an original I.P. and and independent company!