Gunroar

Gunroar is a freeware, open-source vertical shooter with abstract vector graphics created by famous Japanese developer Kenta Cho. The player controls a ship resembling a jetboat seen from above, trailing around the screen and shooting an endless stream of bullets against the enemies, while deftly avoiding collision with their incoming projectiles. The main weapon keeps automatically shooting as long as the button is pressed down, while the secondary missile weapon has to be launched by activating the trigger every time. A countdown clock at the upper left shows the remaining time before the arrival of the next large boss enemy.