VG Chartz has today announced that according to their early sell-through data, Grand Theft Auto 4 has sold a record 2.5 million units in its first day of sales. GTA IV has been universally acclaimed upon release and the titles day 1 sales places the title in the upper echelon of industry hits – those that are universally loved by both critics and by casual gamers. Data for the first day of GTAIV sales shows that the game sold roughly at a 6:4 ratio in favor of Xbox 360 to PS3 in the Americas. While that means the game sold better on Xbox 360, it had a higher attach rate on PS3 – the same story was the case in the UK according to an earlier report by Chart Track. At $60 per unit for the standard game and $90 for the special edition and around 1/4 of all games bought being at the higher price, Rockstar is looking at around $170 million in day one Americas revenue. For comparison, Microsoft stated that Halo 3 saw $170 million in sales revenue day one so it seems at this point the combined Xbox 360 and PS3 sales for GTA IV are about on par with Halo 3. Super Smash Brothers Brawl recently sold over 900,000 units in the Americas day one and went on to sell almost 1.6 million units week one. A similar pattern for GTAIV would push the title to over 4 million units in the Americas for week one – we expect the title to have a drop off rate more akin to Smash Brothers Brawl than Halo 3. Sales have also been brisk in Europe, along with Chart Tracks report of 600,000 copies sold in the UK in one day, VG Chartz estimates that around 1.7 million units were sold across Europe and others on day one – the format split is roughly a mirror image of the Americas, with around 60% of all European sales being on PS3. Day one sales for Europe and the Americas combined bring GTAIV to 4.2 million units worldwide, a staggering number, both in units and in revenue. Stay tuned for more sales updates as the week progresses. – VGChartz