The Humble THQ Bundle, which launched last Thursday, has now generated close to $3.3 million.
The bargain game collection allows customers to pay as little as $1 for Steam keys for a collection of PC games.
Buyers can choose how their purchase is divided between the Child's Play Charity, the American Red Cross, and/or THQ.
Though the lowest possible payment for all of the games is $1, the average contribution so far has been $5.64. As a bonus, those who pay above the average price receive a copy of Saints Row: The Third.
Just shy of 580,000 punters have now purchased the Humble THQ Bundle, which made $2 million overnight following its launch last week, helping the publisher enjoy a rare surge in its share price.
THQ is facing a number of financial difficulties. The firm has defaulted on loan repayments to lender Wells Fargo and has until January 15 to meet the bank's conditions.