Small cards: FFG Mini European (RED) Normal cards: FFG Standard (GREY)
How many are there of each? What are the sizes?
This information is found in the "More Information" tab on this games front page here at bgg. 23 Action cards (63x88 mm) 36 Invader Machine cards (10 Hit, 26 Miss, 44x68 mm) 10 Invader Objective cards (63x88 mm) 10 Defense Plan cards (63x88 mm)