'Tomb Raider: Underworld' under-performs

Eidos has revealed that sales for Tomb Raider: Underworld have been far lower than expected.

Lara Croft's latest outing, which was released in November, is thought to have sold 1.5 million copies worldwide, far lower than original estimates.

Eidos has attributed poor sales, particularly in North America, to the global economic downturn, according to Gamasutra.

Analysts have predicted that yearly revenues for Eidos are likely to be down by at least £20 million on original forecasts, while its stock prices have also taken a tumble.

Eidos did reveal that it was "pleased" with Underworld's European sales and that it was "encouraged by the positive reaction" for its forthcoming Batman: Arkham Asylum video game.