The Humble Bundle website made its name by selling pay-what-you-want "bundles" of games online, with charities benefiting from the sales.
Weekly sales of individual games and a download store followed, but now it is expanding again.
The website has launched a "14 days of bundles" promotion, starting on 13 May and promising to offer a new deal every 24 hours for a fortnight.
"Expect some unique bundles curated specifically for this event. You will also see special deals on games packaged with great extras," explained Humble Bundle on its blog. "We are also opening up the vault and bringing back some bundles for one-night-only reunion shows and kicking off this festival with one of our favorites."
The first is the return of one of the site's best-selling offers – The Humble Deep Silver Bundle – which includes Saints Row 2, Saints Row: The Third, Sacred 2: Gold Edition and Risen 2.
More games and downloadable content are thrown in for people who pay more than the average price ($6.30 at the time of writing) as well as another game, Dead Island: Riptide, if they pay more than $9.
Humble Bundle has been a reliable revenue generator for independent games developers in particular, and the latest bundle is no different.
In a little under 18 hours so far, it has generated more than 106,000 purchases and total payments of more than $672k, split between developer Deep Silver, charities the American Red Cross and Child's Play, and tips to Humble Bundle itself.
The 14-day promotion follows a high-profile bundle earlier in 2014 for games developer Sid Meier, which generated $1.7m of payments in its first two days, and ended up with more than $4.3m. Humble Bundle has also regularly offered bundles of Android games, providing a valuable source of revenues to indie developers struggling to make sales on the Google Play store.
In August 2013, founder John Graham told Rock Paper Shotgun that Humble Bundle had generated more than $50m in bundle revenue and raised more than $20m for charity since its first promotion in 2010.
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