Splatoon takes heavy inspiration from existing works so...

Even the creator of that shitty game said it was untrue.

Some of the comments in that video are rather funny.

Wasnt there an Xbox 360 game like that before Splatoon was even a thing?

Samus, you're making this into a way bigger deal than it is. Just think through if you really wanna blame them for sharing a cool user created thing just because it pays homage to Splatoon.

LOL, their not even trying to be subtle.

First of all, how do you know the game was shitty if it never came out.

Second of all, there was a trailer of the game, way before Splatoon was announced, and both are identical. Unless you can turn back time, the Xbox game came before even tho it got cancelled.

What are you saying! There's no resemblance whatsoever. :P

Lol, sure.

One doesn't need to play it to see how shitty it is.

Here's what the developer of the game had to say:

EDIT (5/29/2015): As the there is unexpectedly many comments under the video and the number of views almost reached 100.000 I am adding some information about what you just saw. Minute trailer presenting prototype made by Mindware Studios. Czech Republic based studio behind Cold War, Painkiller Overdose and Dreamkiller is not longer exists. The prototype was made within six weeks by 15 people and it was playable. The basic principle is suprisingly similar more to Half Life mod called Day of Defeat then to anything else. You are just playing with paintball guns. The level is divided into sectors. Instead of capturing a flag you need to color all sector in order to capture him. By capturing all sectors to won the game. You have two teams typically with four players. Each player can chose one of four classes (painter, washer, tagger, supplier - i do not remember exact names). While painter's job is to paint as many areas as he can, washer can clean sectors painted by enemies and your team mates (when you are painted by your opponents color, you need to return to your base). Tagger can paint tags like lock tag that lock sector painted by your team, teleport tag and others. Finally supplier brings you color to battle field so you need not to return for ammo to your base. The concept is about five years old but the game itself was never finished . I do not think Nitendo copy cat this. Former game designer of Color Wars.

*cough* color wars *cough*