The NPD Group has released its monthly video game hardware and software sales figures for the month of April. According to the results, Rockstar’s open-world crime thriller sold a total of 2,850,000 units, making it the best-selling software title on both PlayStation 3 and Xbox 360 for the duration of April.

“GTA IV captured two of the three top game spots, realizing an attach rate of 20% to the combined Xbox 360 and PS3 install bases. With only 5 days at retail during the reporting month, GTA IV is one of the fastest-selling titles in video games history,” said analyst Anita Frazier.

The Xbox 360 version of GTA IV took top honors sales-wise, pushing 1,850,000 units, while the PS3 version sold a million copies.

In terms of hardware sales, Nintendo pulled well ahead of the competition, selling a whopping 714,200 Wii and 414,800 DS units. Impressive, considering this was the same month GTA IV launched after all.

Full hardware and software sales break down after the jump.

Hardware Sales

Wii 714,200
Nintendo DS 414,800
PSP 192,700
Xbox 360 188,000
PlayStation 3 187,100
PlayStation 2 124,400

Software Sales

Xbox 360 Grand Theft Auto IV 1.85 million
Wii Mario Kart Wii 1.12 million
PS3 Grand Theft Auto IV 1.00 million
Wii Wii Play 360,000
Wii Super Smash Bros. Brawl 326,000
PS3 Gran Turismo 5: Prologue 224,000
DS Pokemon Mystery Dungeon: Explorers of Darkness 202,000
DS Pokemon Mystery Dungeon: Explorers of Time 202,000
Wii Guitar Hero III 152,000
360 Call of Duty 4: Modern Warfare 141,000

Read more: May NPD: Nintendo Leads Hardware Sales, PS3 Edges Past 360, GTA IV First Week Sales Total Half A Billion, Gallery: Pokemon Mystery Dungeon 2, June NPD: Wii And DS Lead, MGS4 Fuels PS3 Hardware Sales, May NPD: Sluggish Month for Industry, Sales Dip Below $1 Billion