UK computer games publisher Eidos says that sales of the Tomb Raider: Underworld are below its forecasts, with US sales particularly hard hit.
In North America, it said retailers were offering heavy discounts on the game, which features Lara Croft, and were stocking fewer items.
It said that as a result revenues for the full year would be between £160m to £180m, lower than earlier forecasts.
The company said it may have to talk with its lenders over debt repayments.
"In an difficult North American economy, we have seen retailers restricting inventory levels and...products priced discounted above our expectations," the company said.
The firm had expected revenues for its 2008 financial year to be between £180m to £200m.
Eidos, which used to be called SCI Entertainment, said that the 2009 financial year would get a boost from the Batman: Arkham Asylum video game.