Opportunity cards (taken from a shuffled pile) are gained on a roll of 3, 7 or 11 (not counting rerolls due to double throws). These present the player with additional opportunities for escape. Some cards allow "free" equipment to be gained (without visiting the rooms required). Additional cards allow players to use one of the three tunnels shown on the map, hide escape equipment to avoid confiscation, steal the Staff Car, move to safe hideaways, escape solitary or avoid being shot during an escape attempt. Players may keep their opportunity cards secret or secretly show each other their hands in order to assist each other's escapes.