Grinning Cobossus

Grinning Cobossus is an online 2D Flash vertical Shoot Em Up game developed by Gama11.

Grinning Cobossus is a game that basically only consists of one level - which is a fight against the titular foe. However, this game features 3 difficulty settings (Easy, Medium, and Hard), survival mode, and up to 12 achievements earnable over the course of play. Will you be able to kill the cobossus?

This game can be played at here.

Grinning Cobossus provides examples of:

 * Collision Damage
 * Easter Egg:
 * Endless Game: Survival mode, which is unlocked after beating the Medium difficulty setting, goes on indefinitely until you fall to the Grinning Cobossus. For every iteration or loop, your upgrades get reset and the difficulty is raised.
 * Final Boss: The Grinning Cobossus. Of course, he's the only boss fought in this game.
 * Frickin Laser Beams: One of the attacks that the Grinning Cobossus does in its first form is fire a giant blue beam straight down.
 * Non Indicative Name: The Grinning Cobossus never grins or even smiles - it maintains a neutral visage throughout the game.
 * No Plot No Problem: The only instruction you are given at the start of game is to kill the cobosuss. No other explanations to the story are given.
 * Point Buy System: After damaging the Cobossus enough, you obtain points that can be used to upgrade four of your ship's stats: Damage (ship's bullet power), Defense (ship's maximum health), Speed (ship's maximum speed), or Rate of Fire (ship's firing rate).
 * Regenerating Health: Your ship's health will slowly regenerate if its health is below the maximum possible.
 * Shout Out: The titular boss of this game is a direct reference to the Grinning Collosus of You Have to Burn The Rope. In fact, even the ending.