Nintendo on Tuesday announced a raft of new software in a bid to prop up disappointing sales of its latest handheld games gadget, the 3DS, but there was no sign of the add-on accessory that games blogs have said is in the works.

President Satoru Iwata unveiled what he said was an unprecedented range of games, some featuring the company's much-loved Mario character, at an event held two days ahead of the Tokyo Game Show.

Nintendo slashed the price of the 3DS after sales shrivelled to just 710,000 units in April-June, down on 3.6 million in the first month after launch, and a tiny fraction of the 16 million unit target for the year.

(Reporting by Isabel Reynolds; Editing by Joseph Radford)