Despite suffering a heavy stock fall following the news that key upcoming title Metal Gear Solid 4 will not arrive until next year, Konami has posted a 23 per cent rise in net income for the first half of its financial year ending September 2007.

Net income reached YEN 13,075 million, whilst operating income increased by 29 per cent to YEN 133,743 and sales jumped by 12 per cent.

The star performers included PSP title Metal Gear Solid Portable Ops, the Pro Evolution Soccer/Winning Eleven series and Konami’s PS3 and Wii baseball titles in Japan.

In the release the firm went on to add that it will back whichever formats prove to be the most popular in any given territory.

A statement read: "Previously, a single home gaming platform [PS2] was the market leader worldwide, but that pattern has changed. Whichever platform best caters to users’ preferences in a particular country or region, in terms of the games available to be played on it, is now the one that will dominate the local market."