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Grinning Cobossus

rated 4.02 / 5 stars
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Action - Shooter - Horizontal Flight

Credits & Info

Oct 19, 2011 | 12:05 PM EDT

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Addicted 5 Points Load up the game five times
Don't leave yet! 5 Points Click "more games"
Nope, not a walkthrough 5 Points Watch the video
Pressin' F5 5 Points Load up the game two times
5 Minutes to kill yourself 10 Points Play for five minutes
Whining Cobossus 10 Points Beat the game on easy difficulty
Malicious Joy 25 Points Score 35k in survival mode
Now you're a hero 25 Points Beat the game on medium difficulty
This is actually fun! 25 Points Play for half an hour
Double Kill 50 Points Score 100k in survival mode
Easier with a rope 50 Points Beat the game on hard difficulty
Ultimate Assassin 100 Points Don't get hit on "hard"

Author Comments

Grinning Cobossus is a shmup that only consists of one epic boss fight, but it features 3 difficulty modes, survival mode, 12 achievements to earn and a lot of fun.

v 1.09 Added a 3-seconds delay after unpausing the game

v 1.08 Various bugfixes, mouse is now centered on the ship, also fixed a bug that occured in survival mode

v 1.05 Fixed health regeneration issue. Also, scores in survival mode are updated each time you hit the boss, the score won't be ignored when quitting via the exit to menu button.

v 1.04 You can now suicide by pressing the "9" key two times in case you wanna quit survival mode. (It won't save the score unless you die)


Mouse - move (mouse controls)
Left mouse button - Shoot (mouse controls)
WASD / arrows - move (keyboard controls)
X / L - shoot (keyboard controls)
F - toogle autofire
K - toggle keyboard controls
Space / P - Pause
M - mute all sounds

The game's a pun on the legendary flash game "You have to burn the rope". The Grinning Colossus was used with mazapan's permission.

Feel free to leave feedback, especially since it's my first flash game. I'm open for suggestions and tips, but also bug reports.



Rated 5 / 5 stars

boss's facial expression

instant 10 for epicness

Gama11 responds:

Thank you!


Rated 2.5 / 5 stars

Seven Force, this guy is not.

I like the IDEA behind this game. Just have one opponent that has a bunch of forms, and do battle with him until you win.

I also liked this idea a lot more in "Boss Battle", a game I once played on Kongregate where the boss had more than four fixed patterns throughout the whole game.

See, the problem with this game is not in the ideas you have (I like the experience and upgrade system you have- even though it doesn't feel like upgrading my damage really does anything- and I love how it works on an "Awardment" system), but the simple fact that the boss itself isn't very interesting to fight.

Cobossus's patterns are extremely easy to figure out, and because they come at you in the same order every time, it's not exactly hard to defeat the first three stages of your Cobossus foe- and the only reason it's hard to defeat the fourth stage is because not only is he the only one that attacks with any sort of randomness, he also decides to suddenly become a top-level damage sponge (seriously, he takes a LOT less damage than the other forms despite how by this point, your damage level has likely been boosted a couple of times) who seems meant solely to annoy the player into making mistakes because he just doesn't want to fucking DIE.

This is a game that, while sound in concept, really needs more to it than there is. Maybe give him more phases, maybe add a little more randomization regarding how he attacks, maybe rebalance how much health he has during his four phases... just do something, because the game's pretty mediocre as it stands.

And I also find blatantly pandering the game to people who've heard of "You Have To Burn The Rope" to be a REALLY cheap grab for high scores, but I won't reflect that in my own score.

People find this review helpful!
Gama11 responds:

Thx for this in-depth review. It really helps me to make better games in the future. :)


Rated 4 / 5 stars

i like it but

if this is your attempt to match burn the rope it failed

Gama11 responds:

This wasn't suposed to be a copy, but a reference, since I love YHTBTR. ;)


Rated 4.5 / 5 stars

Hold on a sec...

i thought you couldnt kill the cobossus using normal means, like shooting, i thought you could only kill him by burning the rope! i should know, i tried throwing axes at him for like 10 min...
Anyways, a nice little vertical shooter. kept me rather entertained.

People find this review helpful!
Gama11 responds:

Thx, I'm happy you enjoyed playing it.


Rated 3.5 / 5 stars


Decent game. I definitely enjoy it for the time I played it. Started off on hard and then checked out easy. Multiple bosses with new patterns would be fun.

Something you might consider fixing is the reference point for the ship to follow the mouse. The red dot is to the left of the ship. Several times I'd avoid bullets by moving to the left edge and my mouse would move out of the game window, causing me to get it.

People find this review helpful!
Gama11 responds:

Yeah, that's something I'll definetely take into consideration. Thx for the helpful feedback. :D