Dwarf Fortress is a big success story on Steam. It bought almost 500,000 copies lower than a month after it debuted on the storefront—which, for the file, occurred greater than 16 years after its preliminary standalone launch—incomes its two-man improvement group greater than $7.2 million in income. And it is nonetheless shifting items: Dwarf Fortress co-creator Tarn Adams advised us throughout a GDC chat that the entire determine has now climbed to roughly 630,000 copies bought on Steam.

Adams famous that the determine would not embrace refunds, which convey the precise gross sales determine down considerably. “There’s some share of refunds and so it is in all probability hovering round 600,000,” he continued. “And want lists are double that… they usually’re going up.”

It is price noting that Dwarf Fortress put up these numbers with none main worth cuts: It is 10% off within the Steam Spring Sale, and had the identical low cost over the ultimate week of February, and has in any other case been at its not-inconsiderable common worth of $30/£25/€30. And although gross sales have predictably slowed since launch, Adams expects that it is going to proceed promoting lengthy into the longer term.

“It is a type of issues where it feels just like the tail is simply gonna go on without end and ever,” he stated. “And that is type of been our expertise with the game the entire time.”

Adams acknowledged that the runaway success of Dwarf Fortress, and the wealth and fame it is dropped at him and his brother Zach, has been “unusual.”

“Rising up when laptop video games have been extra extreme, I by no means in my life imagined [being] a game developer or being a semi-celebrity or no matter,” Zach Adams stated. “However that appears to have occurred.”

“It is unusual, yeah,” Tarn added. “Happening the Seattle ferry and simply being, you already know, somebody stroll up and be like, ‘Hey, are you the fellows that made Dwarf Fortress’ or no matter. And like, yeah.”

They appear to be adjusting fairly nicely up to now. After 20 years of engaged on their very own, the brothers employed a second programmer in December 2022, and Tarn is now searching for a ‘very particular guitar.’

The Dwarf Fortress sale on Steam ends on March 23.