On the higher difficulty levels, more points are required to pass the mission, with 100 being perfect. Penalties are given for unauthorized use of force, injuries to hostages, officer incapacitation, and personal injury. Players may not fire on suspects with lethal weapons unless the suspect points their firearm at a fellow officer or a civilian. In addition, players must follow strict protocol to ensure proper use of force. For example, it encourages the use of non-lethal force to subdue and arrest subjects rather than shooting them.

The game aims to have gameplay similar to real SWAT experience. The missions are not related and there is no overarching storyline. 'SWAT 4' features a single-player campaign in which the player has to lead their SWAT element through 13 missions. In 'SWAT 4', the player leads a SWAT tactical element in resolving various situations, such as hostage standoffs or apprehensions of dangerous subjects.An expansion to 'SWAT 4', entitled '', was released on February 28, 2006. It was built on Irrational Games's Vengeance engine powered by Unreal Engine 2.0 technology. 'SWAT 4' is a tactical first-person shooter computer game developed by Irrational Games and released by Vivendi Universal on April 5, 2005.

32-bit Internet service provider with 56k modem or a local area network.

Windows XP with Service Pack 2 installed.

GeForce 4 Ti (not MX) with 128 MB, ATI Radeon 9500 with 128 MB with Microsoft DirectX 9 drivers installed.

2.4 GHz Pentium 4, Athlon XP 2500+, or equivalent.

Windows 98SE, Windows 2000 with Service Pack 3, or Windows XP with Service Pack 1.

NVIDIA GeForce2 (MX 200/400 not supported) with 32 MB of ATI Radeon 8500 with 64 MB with Microsoft DirectX 9 drivers installed.

Intel Pentium III 1.0 GHz / Intel Celeron 1.2 GHz / AMD Athlon 1.2 GHz.

Does anyone still play swat 4 online