Gary's Mod - I don't get it.

its a sandbox game

YES you can play with all valve things(you must have them) you can install mods for it!play MP the best mod called TTT(Trouble In Terrorists Town)

Yes, Garry's Mod is a sandbox and you can do everything you want. You can play with everything from other Source games.

You decide the objective. If you want to build something that flies, fly it. If you want to build and race a car, do so. If you and your friend want to build forts and artillery and shell each other with it, have fun.
It's the very definition of a sandbox game. :)

It's like 500 games in one. It's a hub for different gamemodes. Sure, sandbox (build shit/destroy shit that you build) is the main attraction, you can also play several different games on the source engine using garry's mod. From roleplaying gamemodes like Jailbreak and TTT to minigames like GarryWare and Fortwars, to classics like Deathrun and Surf.

There's a lot to do.

It's the best sandbox multiplayer game avaliable ever IMO.

You can build electronics, robots, vehicles etc. There are also a lot more of gamemodes like Trouble In Terorists Town, Gmod Tower, Gmod Theather, minigames and RP.

its epic its the best sandbox game i wish i had it :/

One easy thing you need to know: You don't have to get it.

yeah, its awesome. You can build absolutely anything.. I mean there is video somewhere in youtube, where people build proccessor, and installed a windows ingame ;o sounds complicated, like inception dream in dream

I bought, i played it, i tried to make stuff on my own, didn't get any success, started playing mods for Garry's mod, there's one you might enjoy if you are into zombies vs humans (player vs player), server ip: 65.60.53.27:27015 .

I also found this one Roll playing server via a friend, lost the ip of that, but it was mad fun too when doing the mini games. Some sort of RP tower mod, where you had your own room, cinema, shops, secrets, mini games, lots of other stuff.

It's is a really fun game if you have the time for it.

Meh, not worth the $50 you have to spend to get all of the models.

Fun IF you have friends.

Also- not worth full price.

SO is it a sandbox developing kit?

You can't spell Garry's Mod either.

You can just spawn a map adn mess around with crap from others,play mods,and use models from other Source games (if you have them).

It's hilarious fun! Straight forward you can play single-player (boring) or you can play multi-player (FUN) Lots of gamemodes which don't take much time getting used to some are: sandbox (multiplayer just playing around), TTT (Trouble In Terriost Town (Basically a virtualised and much better version of Cluedo)) and many many many others to see how many others there are there are about 1100-1200 servers to play on (50% of them sandbox). But when you find a gamemode you like you are addicted to the game and the gamemode! As you can see with my 200+ hours

lua rules. I even designed a simulation for Lotka-Volterra equations once using GMod and didn't even get the "Bad coder" achievement :)