[Game]Explain a Game badly (edited with new rules, now with leaderboard)

Beating up shadows together with a duck and a dog, in search of a mouse.

Twin Peaks: Crash Edition

Well, i will continue then:

Fat guy meets annoying robot, everything explodes

Hint: It's a side scrolling game

Now Bundle Stars copied it as well on their Facebook :P

A badly-risen, Stockholm-syndrome-suffering boy kills people different from him while looking for a fictional friend.

You literally have one life only but you will lose if your partner die.
Hint1: this game sucks
Hint2: your body can explode into different parts and all you need is just rolling them over with your head

Save the world with a ridiculously short time limit.

Dude who's totally 'armless saves his world from a big nosed wizard

Wander around inside a whale with your dog

Hint 1:The whale is part blimp
Hint 2: The beginning and ending of the game take place in an orphanage
Hint 3: There's lesbians
Hint 4: You can send your dog to search for items

Well, okay, here goes. Long explanation, for a reason.

An experiment involving an artificial intelligence goes belly-up and now it is hell-bent on getting you. You have to neutralise it by going through a set of escape room type puzzles that involve getting a bunch of cube-shaped crates to certain spots, helped by your ability to fall from any height and teleportation holes which can get you from one end of a level to the other in an instant. Not only that, but you also have to avoid a bunch of cute-looking, but actually hostile robots.
On top of that, the game was popular enough to spawn a sequel that added a bunch of new mechanics to the puzzles, but left the core concept alone.

Here is the twist: It is not Portal. Or Narbacular Drop. Or any game that has anything to do with the Valve Corporation. Still, the game is involved with Steam.

Hint 1.: It predates Portal.
Hint 2.: It is a 2D game.

Edit:

If nobody gets it in the next 12 hours or so (and let's face it: nobody will), just add this to the top to the unsolved ones and move on.

Okay, the last one turned out to be pretty hard (6 days and not solved), so I'm going to just take a turn myself:

Indie game about a player of a specific type of team game going on a genocidal rampage to end the world.

HINT: The game's officially available only in French, though there's a popular fan-translation of it to English. It's also free.

HINT2: The game's fully free and isn't available on Steam.

Come on, people, Google should be able to do it by now.

invertebrate warfare seeing as Moooo passed

A Game where you buy items for an expensive real money price which is cosmetic related only

Three guys or gals go fly to other countries to get treasures and say things, both good and bad, to other animals and people.

Walk around while getting mocked by a narrator.

Waited the whole game for the opportunity to kill someone with a fish.

Little hint: It's an AAA one.

You're a llama jumping on very bare grass textures. Yay for movie tie-in!

A janitor in shiny armor must destroy kreatures
hint: no typos

Happy Cake Day!

A Raccoon which jumps through roofs and try to recover a family book by doing some missions

Happy factoryday!

Amateur colorist and racing enthusiast climbs buildings for... reasons.

"A group of fans, a guy with thick skin, a fat guy who likes snakes, a Russian thug and the son of a Russian leader enter into a bar..."

Pass go to collect pudding.

Hint: Board game on Steam.