Cards

Cards are found randomly in sorties. With higher difficulties and later stages, cards are found more commonly (Citation needed).

Add pictures

There are 22 cards, each with a different effect.

Card 1 (Gold) - Increased chance of finding cards
Gives you a better chance of finding cards during sorties

Card 2 (1/2) - Support drone
Gives your plane a drone that will well...support you

Card 3 (2/2) - Support drone
Gives your plane another support drone

Card 4 - Missiles reload time -10%
Self explanatory

Card 5 - Human rescue time -5%
Self explanatory

Card 6 - Lucky shield
Gives your plane a chance to activate a shield for a short time when you're about to die

Card 7 - Your ghost collects stars (2 players only)
???

Card 8 - Initial fire rate +1
You start off with 1 fire rate each mission

Card 9 - Initial fire rate +1
You start off with 1 fire rate each mission...again

Card 10 (Gold) - Star doubler
Doubles the stars you earn during sorties

Card 11 - Missile damage +10%
+10% to your missile damage

Card 12 (Gold) - Laser beam energy +10%
Your laser beam lasts 10% longer

Card 13 (Gold) - Megabomb's power +10%
+10% damage to your megabomb

Card 14 (Gold) - Energy shield durability +10%
Your shield lasts 10% longer.

Card 15 - Rescue rope length +5%
Gives you more maneuverability while rescuing humans

Card 16 (Gold) - Upgrade prices -10%
Store prices are cut off by 10%

Card 17 (Gold) - Health regeneration
Regenerates 1% of health every 1/1.5 seconds

Card 18 (Gold) - Energy shield to begin with
Gives you a shield at the beginning of each mission

Card 19 (Gold) - Laser to begin with
Gives you a laser at the beginning of each mission

Card 20 (Gold) - Megabomb to begin with
Gives you a megabomb at the beginning of each mission

Card 21 - Planes speed +5%
Self explanatory

Card 22 (Gold) - Night Camouflage
Gives your plane a nice black & red paintjob. Note that this card can be collected after all the others