Nathan went to the arcade. He played the air hockey game 2 times and the basketball game 4 times. If each game cost 3 tokens, how many tokens did he use?
Nathan played a total of 2 air hockey + 4 basketball = <<2+4=6>>6 games.
This cost him 6 games x 3 tokens each = <<6*3=18>>18 tokens.
#### 18