The unnamed investor is thought to be Comet owners OpCapita following reports that the investment firm is planning to buy out the retailer's UK stores.
"The Board of GAME confirm that a third-party has shown interest in providing additional funding for the company. The third-party is seeking a dialogue with the Group's current lenders, however there is no certainty to the outcome," read a statement from GAME.
"At the same time, the Board remains in its own discussions with its current lenders as it continues to conduct a review of its business and assets.
"It is uncertain whether any of the solutions currently being explored by the Board will be successful or will result in any value being attributed to the shares of the Company."
GAME recently announced 35 store closures and the discontinuation of sister website gameplay.co.uk. The company sought lender support to alleviate financial troubles following apparent concern by publisher EA.
The high street retailer's shares plummeted by 90% in 2011, despite £1 billion in annual turnover.
> Everything must go: Is this the death of games retail?
View the Modern Warfare 3 midnight launch at GAME's Oxford Street branch below: