: Players use shadows and gadgets to bypass or neutralize enemies. Version 1 simplifies stealth with a "traffic light" indicator on Sam's back (green for hidden, yellow for visible, red for detected), while Version 2 retains the light and sound meters from Chaos Theory .
In , trust is managed via two independent bars; dropping either to zero results in an immediate game over. : Players use shadows and gadgets to bypass
In , a single "slider" represents Sam's standing between the two factions. yellow for visible
: These "hub" levels occur between traditional missions, requiring Sam to perform covert NSA objectives—like bugging offices or stealing data—while maintaining his undercover status among the terrorists. red for detected)