Abstract: A multi-participant gaming feature and system is disclosed wherein a player/participant can alter their perception of fellow players/participants, allies and opponents, in accord with a custom menu of identification traits attributable to the tagged player by the tagging player. The altered perception indicator may be as simple as a target always associated with the tagged player, but may also include audio cues, specialized view-thru instruments, changes in heart rate, pre-determined responses to certain actions, flashback viewing of past interaction with that player, behavior modification, and physical characteristic alterations. Such perception alteration features enable participants to make a gaming experience unique to any desired extent relating to their perception of other participants. Defensive modes for such tagging may also be employed to assist those that may have been tagged to comprehend the tagging of themselves and to adjust their game participation accordingly.