use arrow keys to go up and down and space to shoot big bugs at 1500 power-ups: at score 100 shield - shielded from the next attack at score 200 big bullets - upgrade size of bullets from 75% to 125% at score 500 speed boost - increase speed to almost twice as fast at score 1000 slow bugs - bugs' speed decreases at score 2000 deplete frequency - bugs come less often
beter gun look
