The NPD Group has released its North American retail software and hardware sales figures for the month of May. Unsurprisingly, Nintendo managed to hold onto its seemingly impenetrable throne for yet another month, leading by more than comfortable margins in both console and handheld hardware sales.

Further proving that Grand Theft Auto IV has had little to no impact on console hardware sales, Xbox 360 figures were down compared to the previous month. Comparatively, PlayStation 3 sales edged past the 360 this month by more than 20,000 units.

On the software front, Take-Two and Rockstar’s Grand Theft Auto IV led the pack with 871,300 units sold throughout May. The Wii edition of Mario Kart wasn’t far behind, pushing an impressive 787,400 units. Wii Fit took third place with 687,700 units sold.

For the full hardware and software sales break down, hit the jump.

PlayStation 3 208.7K
PlayStation Portable 182.3K
Xbox 360 186.6K
Wii 675.1K
Nintendo DS 452.6K

360 GRAND THEFT AUTO IV TAKE 2 INTERACTIVE (CORP) APR 2008 1 871.3K
WII MARIO KART W/ WHEEL NINTENDO OF AMERICA APR 2008 2 787.4K
WII FIT W/ BALANCE BOARD NINTENDO OF AMERICA MAY 2008 3 687.7K
PS3 GRAND THEFT AUTO IV TAKE 2 INTERACTIVE (CORP) APR 2008 4 442.9K
WII PLAY W/ REMOTE NINTENDO OF AMERICA FEB 2007 5 294.6K
WII SUPER SMASH BROS: BRAWL NINTENDO OF AMERICA MAR 2008 6 171.1K
PS2 IRON MAN SEGA OF AMERICA APR 2008 7 130.6K
WII GUITAR HERO III: LEGENDS OF ROCK W/ WIREACTIVISION (CORP) OCT 2007 8 116.8K
NDS POKEMON MYSTERY DUNGEON: EXPLORERS OF DARKNESS NOA APR 2008 9 107K
NDS POKEMON MYSTERY DUNGEON: EXPLORERS OF TIME NOA APR 2008 10 102K

Follow this author on Twitter.