After a while, I have to update the review as I discovered more and more fun ways in Garry's Mod. As of now, I decide to say more things, as I discover more and more great things to do in this game. Here it is :

Garry's Mod debuted in 2004, as a modification of one of the most loved games on Steam, Half Life 2. The mod was very simple, you didn't have so many possibilities, like in the actual game. You were capable of tying things together with a rope. Later, features were added again and again. Until Garry's Mod got to version 9, it was free. When it reached version 9, it costed like today, 9.99 euros
. It was still fun, because there weren't so many weeaboos or FNAF lovers which ruin the game. But still, on singleplayer is fun.

Major gamemodes started to appear, thanks to LUA scripting implementation. Trouble in Terrorist Town is one of the first gamemodes created for Garry's Mod. Today it is included when you buy and download the game, no addons needed.

Addons and Dupes are the things that make Garry's Mod more and more fun. For example the drunk crow, it isn't drunk, but it is a very good bird simulator (and realistic of course). You can create everything, even if it is glitched or not, because glitches make the game funny.

One of my favourite things about the game is that you can do a lot of things using only the Half-Life 2 assets.

Physics are very realistic, proving us that realistic games started to exist a lot earlier than anyone would expect. Some games today aren't that realistic.

But there is something that I don't like, and it is not the game's fault or Garry's fault. You need to pay more if you want more realism, for addons like VCmod (which is a lot more expensive than the actual game), or the scriptfodder scripts. This isn't a major problem because you can still make vehicles with a lot of seats or to put seats on vehicles.

In conclusion, Garry's Mod is the only game where :

-linking other games is possible
-create contraptions and building things without any additional program or addon
-you don't rage if you play singleplayer
-it isn't that expnsive (9.99 euros for a game with amazing possiblities is very good)
-can run even at 10< FPS (never lags)

Buy this game, you will be happy, I promise !