Make games please tell me how I am crying to make one for free...I am a kid...?

I am 15 year old...kid....and I am done looking and hacking into the flash games I am really tired and don't want to do it anymore. I realized what happens to the owner of the game when he gets to know what is going on with his game. So, I wanted to know how to make any kind of really nice game like Bloons tower defense 1,2,3,4. Mostly I want to make a game like that one but anything else will be fine but if you have any ideas on how to make games then please make sure the following two things are not in the thing.

1) I own a mini laptop notebook one, so, mostly don't want to download anything. Unless really recommended.

2) I am a kid 15 year old one so please can't pay for anything.

3) MOST IMPORTANT!!! my parents wouldn't agree on paying on internet they don't think that Its safe to pay on internet. So please

A FREE SOFTWARE THAT WILL ALLOW ME TO MAKE GAMES.

Thank you folks.Make games please tell me how I am crying to make one for free...I am a kid...?
I think they sell that kind of stuff at Best Buy or something. I swear I've seen it. You could always ask someone there for assistance on what type of software.

pro comp

apa 6th edition