Probes

Probes are a mechanic in Infection Inc.

Gameplay
Probes are used by the player to attack humans. Instead of having your zombies run up to a human and attack them, you click on a human while your probe is equipped, and then wait until it kills them and gives you credits. The probes in the game are:
 * Probe1
 * Probe2
 * Probe3
 * Probe4
 * Probe5
 * Probe6
 * Probe7
 * Probe8