The PlayStation 2 deservedly holds the record as the top-selling video game console of all time. It won't, however, hold the record for much longer.

Because the Nintendo DS is nipping at its heels, and despite having released five years after the PS2, will - barring an unforseen disaster - overtake Sony's console towards the end of the year.

"The NDS is approaching the PS2 as the best-selling hardware system of all time", says The NPD Group's Anita Frazier, "and by October or November of this year, it should meet or exceed the install base of the PS2."

As of March 31, the DS had sold 129 million units.