You're able to earn cash by doing a singleplayer or multiplayer match. The amount of cash you earn depends on the amount of experience points and kills you get in the match. For example, if you leave a match halfway through, you wont earn as much cash as the players who finished the match.
- Black Isle and Verdammtenstadt can earn you the most cash when playing multiplayer and singleplayer.
- $100,000 can be bought for 10 NK premium skill instead. Unfortunately, one cannot buy NK coins. Wasting coins to buy in-game cash is one of the stupidest things you can do in this game.
- Cash is earned in a $1:5 ratio to experience points, but on the Airport map the ratio is $1:6 and in the Farmhouse the ratio is $1:7.