Wave Card Event adds button-triggered wave events to Oil Rig. Using a special card, you’ll spawn waves of heavy scientists, hack crates, and random event threats like patrol helicopters or radiation strikes. Each mode increases difficulty and introduces new threat mechanics and loot opportunities.
Normal Mode, the Large Rig gains 4 extra hack crates and 55 heavy scientists, while the Small Rig adds 2 hack crates and 18 heavy scientists, with a chance to find a Hard Mode Card in the bonus loot.
Hard Mode introduces three extra mini-events triggered at 50%, 25%, and 10% of the crate timer and includes a chance to obtain an Extreme Card.
Extreme Mode adds two additional hack crates and escalates intensity with five timed events triggered at 50%, 37.5%, 25%, 17.5%, and 10% of the crate timer.

How to Play & Tips

• Press the event button before hacking the main crate
• The Wave Card must be in your inventory to activate the event (not belt or storage)
• Cards can also be used at the red room swiper to start the event
• Extra loot only applies to the Large Rig in Hard or Extreme mode