Big Bang is an arcade game where a player prevents asteroids from colliding with the sun by pressing them. The sun is located at the center of the game area and multiple asteroids move towards the sun.

Big Bang has two types of Asteroids:
Slow asteroids which are circular in shape
Fast asteroids which are rectangular in shape and are twice faster than the slow Asteroids

The game also tracks player score during gameplay, when a slow asteroid is destroyed, the player's score is incremented by 1 and when a fast asteroid is destroyed, the player's score is incremented by 2.

The game also has 3 types of power-ups:
Score multiplier power-up - doubles the score of the destroyed asteroid
Asteroid belt power-up - protects the sun from colliding with an asteroid, but the asteroid belt gets destroyed when an asteroid collides with it
Explosion power-up - destroys all the asteroids