Okay, the rules are already explained in the title. You got to correct the above sentence(s) if it contains a mistake. Just make up a phrase and put one mistake in it. It may be, for example, 3 words but it may also be 100 words. (I mean the phrase with that) You can also 'forget' a character, like a comma or these things: ' " /  = ! etc

However, if you're too addicted with correct spelling and stuff, you may also choose to leave a sentence as a correct phrase, meaning you can trick the user below you by adding no mistake. Then it may be more difficult to see a mistake, to you got to be sharp.

Example:
Bill started this game: "I've seen a cat over there, did you see it as wel?"
Phil: "It's 'well', right? My phrase: I got a new blcycle, do you want to check it out?"
Will: ""blcycle" isn't correct either, mister. My turn: I seen you at the park!"

And so on...

I'll start for you guys:

I didnt know you were reading this text already!

You "forgot" the ' in didnt(the correct would be "didn't").

Now my phrase:I just buyed a new game in that store.

ultrasonic2 : "Buyed" isn't a word. The correct past tense of "buy" is "bought".

Here's my phrase: You ought to push him off of of the mountain when you guys are up there.

The issue in your sentence is the extra "of" in the middle of the sentence.

Here's my sentence: Tuna cassarole is a casserole mainly created out of egg noodles and canned tuna fish.

Delvarian: The first instance of "casserole" in spelled incorrectly, as the a must be an e.

Now for my sentence:

Unlike most other plants and world-wide flora, cactuses can easily survive in a desert terrain with very little water.

TheTrueUlti : Cacti is a plural, and should be pronounced ad such.

I gave a basket of flowers to the principle, he was greatful. 

pennylessz: Wow, not a lot of people are aware of such grammar. Anyway, since I have already started, I might as well continue the thread:
 
Since you are referring to human being, principle should be spelled principal, as a principle is a basis or policy, and a principal is the head of an individual school.
 
Let's make this just a tad bit harder now...
 
My sentence 
My mother had bought me home some games as a reward for cleaning my room.

TheTrueUlti :

You forgot the letter 'r' in the word 'brought'

My sentence:
How many times do i have to tell you to eat your spaghetti.

Lexatom : Even though you can't answer this...

Hm... I think the errors include not capitalizing "i" and the sentence was supposed to end with a question mark.

My sentence:

Me and my friends went to dig for treasure but all we found was a talking Eggplant.

Yuna1000 : it should be "My friends and I", maaaybe there should b a comma after "treasure" (could just b a style thing tho), and the "E" in "Eggplant" shouldn't b capitalized

here's my incorrect statement

RDay13 is not gay.

NintendoFanKimmy : I believe the correct usage is "RGay13 likes One Direction". This definition can be found in the ZeroTails new world dictionary. 


My incorrect statement: 

Me liek Minuano's videos. 

I think you mean i LIKE MInuano's videos. Don't go around saying "me liek". That's improper grammar!!

i,m a very smart person.

Khfan_D98 :   There are too many errors. The capitalization of "i LIKE" ought to be reversed. "Minuano's" Ahem.

 I'm a very smart person. That is an incorrect statement.

 The quick brown fox jumped over the lazy dog.

Postman3 : I know that one. It's supposed to be 'jumps'.

If you see my xbox, it's gone since 2010.

MarioLucarioFan64 : Ha! Got you! I used proper grammar! Stay in school kids. Don't be like Koen here.

 Adding 'jumps' would make an imperfect present participle which as a sentence is quite dubious. Furthermore, if anyone was thinking that there ought to be a comma between quick and brown, you are also wrong. 'Quick' modifies the 'brown fox' as the page following the URL clearly indicates.  http://www.quickanddirtytips.com/education/grammar/commas-with-adjectives

 Now to dismantle Koen's sentences and reconstruct them. They ought to be made into two sentences.

 If you see my XBox, please tell me where it is. It has been gone since 2010.


For future reference, "it's" always signifies "it is". That contraction can never mean anything else. No contraction in the English language has two different meanings.

 ***

 My sentence is gonna be very simple.