Best free "stealth" games

Stealth games are all about staying out of sight, avoiding detection, and getting the job done without turning every room into a battlefield. Instead of relying on brute force, players use shadows, disguises, distractions, silent weapons, and careful movement to slip past enemies. Line-of-sight systems, noise levels, enemy patrols, and suspicious AI behavior all play a major role, making patience and planning just as important as quick reflexes. Some games allow combat when things go wrong, while others make being discovered a particularly expensive mistake. The real satisfaction comes from completing an objective, walking away unnoticed, and leaving everyone wondering where you went.