Shadowforce has Gunman (iTunes Link) in the iTunes App Store for FREE for a limited time.

Laser tag meets urban paintball in an epic battle against your friends–a heart pounding adventure that puts you and your iPhone directly in the line of fire. You have been recruited by Shadowforce to join an elite unit charged with taking out rogue agents (your friends) in the local area. Find a quick hiding place (a balcony or a dark corner will suffice) and dig in before the shots start flying.