GENETOS is a vertical shooter with an "evolution" theme. In GENETOS, the levels represent different generations in the evolution of shmups.
In GENETOS, Weapons of your ship varies with your playing style. For example, you move forward aggressively in the game, you'll get a short range and highly powerful blade. Or you bump into an bullet many times, you'll acquire the ability to slow down the bullet speed.
Use the arrow keys to move, and press Z key to shoot.