Fallout 4 sold 1.87 million copies digitally during just its first three days on sale, a figure which amounts to $100m (£66m) in revenue and points to even wider success when it comes to physical sales.

Games media market data analysts SuperData revealed the digital sales figures (via GamesInudstry.biz) for just those first three days, reporting a split of 1.2 million and 650,000 sales between the PC version and those sold on PS4 and Xbox One. During the same period Fallout 4 topped GTA 5 for the most concurrent launch day players on Steam.

Last week developer and publisher Bethesda sent out a press release celebrating the game's launch, for which they shipped 12 million units to retailers to meet demand. That figure doesn't represent the number of units sold on to the public however, and no firm figures were offered.

Bethesda's vaguely worded press release spoke of "record sales" both digitally and physically, but offered little to back that up beyond the aforementioned 12 million shipped copies, which "represent sales in excess of $750m" (that is, if all 12 million had been sold, which they were not).

Exact figures won't be known until Fallout 4 crosses a substantial milestone, like 10 million units sold. Regardless of the numbers currently being thrown about however, it's clear Fallout 4 has been an enormous success and will continue to sell well for a long time.

Fallout 4 is out now for PS4, Xbox One and PC. You can read our review here.

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