▲
1
▼

Afterwards, in the puzzle "Man on The Moon", after launching yourself over to the forcefield, you can find a small key hidden just to the right of it. After returning to the other side of the wall, use the far-most fan to launch yourself onto the arches to the left, and then maneuver your way to a viewfinder that is unlocked by the small key. The viewfinder allows you to get a better look at the speck on the Moon, which is revealed to be Wheatley from Portal 2 staring back at you, in reference to that game's ending where Spoiler:Wheatley is sucked into a portal on the surface of the Moon.
▲
1
▼

Related Games
Serious Sam II
Observation
Hotline Miami
Marc Ecko's Getting Up: Contents Under Pressure
Hotline Miami 2: Wrong Number
Serious Sam Double D
Shadow Warrior
Pepper Grinder
Omnibus
Serious Sam 3: BFE
Shadow Warrior
Dropsy
Gods Will Be Watching
Miitomo
Dark Seed
Pokémon: Let's Go, Pikachu!
Bridge Project
The Evil Within 2
Infinite Minigolf
Mega Man Legends
Grand Theft Auto: Liberty City Stories
Memoirs of Magic
Star Trek: 25th Anniversary
RollerCoaster Tycoon
Gex Trilogy
Meatly's Storage World
Maniac Mansion
Sonic Origins Plus
Professor Layton and the New World of Steam
Time Pilot
Mint's Hints
Bit.Trip Runner
Counter-Strike: Source
Yeah Yeah Beebiss II
LEGO Indiana Jones: The Original Adventures
OpenTTD
Galaga: Destination Earth
Crazy Taxi
Five Nights at Freddy's: Help Wanted
The King of Fighters XV
Age of Empires II: The Age of Kings
Yoshi's Crafted World
Cluefinders: Math Adventures - Mystery of the Himalayas
Hot Wheels Stunt Track Driver
Superhero League of Hoboken
Cthulhu Saves the World
The Dig
Marvel: Ultimate Alliance
Resident Evil 6
Disney Infinity 3.0