Epic Games' founder and CEO Tim Sweeney appeared on stage to show the powers of the PS3 and Unreal Engine 3's programmable shader tool, using the man-against-robot demo from E3 and a new first-person demo that featured a corridor with different effects. With the Unreal Engine turned on, the graphics looked like they were taking full advantage of the PS3's capabilities, with realistic shadows and water effects. Turned off, the graphics looked much blander, like PS2 games with higher resolutions. "The shader programs here [in the demo] are typically about a hundred instructions long [per pixel]. With the PlayStation 2's graphic capabilities, it was about one to one, or two shader instructions [per pixel]," explained Sweeney, emphasizing the PS3's power.