I don't like it. The gag is as follows.
"Hey! Look at this silly goat! It's doing things that goats don't normally do! lolololololol ragdol fisikz"
As you could probably guess, the gag wears thin quickly. There are some good laughs in the achievement "Micheal Bay", which you get from exploding a gas station, but they're one-time jokes.
The few maps are pretty small, condensed, but don't have enough content to be fun for more than 20 minutes each.
"But you can download more!", I hear you cry, but alas- mods suck. The modding community is smaller than a pinecone that has been grown to a couple pages worth of pinecone-leave-things that crash the game when they're loaded.* The other "goats" you can download and unlock are, again, good for a few laughs. I've never seen another game where Shrek can fly around on all fours with a jetpack before lightly touching a vent and being flung into the stratosphere. The problem is that said experience is just not fun, and it takes control from your hands for a while until you hit the ground again.
The scoring system makes absolutely no sense what-so-ever, it seems to just throw points at you willy-nilly for being airborne and doing some spins or something, but it feels like however many points I got had nothing to do with me, making most of the achievements feel meaningless, as most of them come up to "Score points" or "Stay airborne for x seconds".
I know the game was made in a short time, I know it's meant to be bad, but that doesn't excuse it. Calling a rock a rock doesn't make it better than a rock.* Also, the game doesn't run very well on most computers, and that's weird.
Buy Garry's Mod. Same price, runs better on most computers, the gags in this game can be met and expanded upon with GM, better graphics, more interesting to play, and it also has ragdolls. There's probably a reason why almost every positive review of this game only talks about the fact that goats are in the game, so 10/10.
*Aren't I great at analogies?