Looking for The Binding of Isaac Afterbirth!

Tier 1

Broken Age
Brothers: A Tale of Two Sons
Brutal Legends
Darksiders II: Deathinitive Edition
Day of Infamy
Eagle Island
Garfield Kart
Grip
GUILTY GEAR XX ACCENT CORE PLUS R
Killing Floor 2
LEGO® Batman™ 3
Magicka
Original Journey
Party Hard
Pikuniku
Resident Evil Revelations
SimCity 4 Deluxe Edition
Tilt Brush
Trail Makers
Undertale
Wizard of Legend
World of Goo
Worms Revolution
Yesterday Origin

Tier 2

A Good Snowman Is Hard To Build
A Mortician's Tale
Eliza
Hacknet
HIVESWAP: Act 1
King's Bounty: Warriors of the North - The Complete Edition
LostWinds
Mages of Mystralia
Night Call
Perfect Universe
Pizza Express
Prime World: Defenders
Prime World: Defenders
Shenzhen
Space Ranger HD: A War Apart
Speed Brawl
Star Wolves 3: Civil War
Stealth 2: A Game of Clones
Stick Fight: The Game
Tharsis
The Hex
This Is the Police
Tropico 4
Warstone
Zombotron

Tier 3

9 Clues: The Secret of the Serpent Creek
Alien Spidy
Clockworrk Tales: Of Glass and Ink
Cryofall
CTU: Counter Terrorism Unit
Dark Arcana: The Carnival
Hyperspace Invaders II: Pixel Edition
Moto Racer 4
Rebuild 3: Gangs of Deadsville
Starfinder: Pact Worlds Campaign Setting