Trying to get Terraria if you can find something comparable that interests you. My list might not be up to date.
Alpha Kimori™: Episode One
Always Sometimes Monsters
Beatbuddy: Tale of the Guardians
BioShock
Card City Nights
Command & Conquer: Red Alert 3 - Uprising Steam Key
Dreamcast Collection
Dust: An Elysian Tail
Eldritch
Galactic Civilizations II: Ultimate Edition
Giana Sisters: Twisted Dreams
Insanely Twisted Shadow Planet
Kane & Lynch Collection
Lara Croft and the Guardian of Light
Mirror's Edge Steam Key
NiGHTS Into Dreams
Nuclear Dawn
OlliOlli
Scrolls Full Version
SolForge — Dinosaur Starter (Early Access)
Starseed Pilgrim
Startopia
Supreme Commander 2
Tales From Space: Mutant Blobs Attack
Talisman Prologue
Talisman: Digital Edition
Talisman: Digital Edition: Gambler Character Packs
Talisman: Digital Edition: Martyr Character Packs
The Darkness II
The Incredible Adventures of Van Helsing - Complete Pack
The Lost Crown
The Swapper
Total War: ROME II - Caesar in Gaul (DLC)
Requires base game
Every Monday 15
Into the Dark: Ultimate Trash Edition
Bardbarian
Toki Tori 2+
Coldfire Keep
Captain Morgane and the Golden Turtle
Dracula 4 and 5 - Special Steam Edition
Terraria
Dead Island: Epidemic
DEFCON
Psychonauts
Shantae: Risky's Revenge - Director's Cut
Tropico 4 steam special edition key
CS:GO skins
TF2 items
Trading cards
Dragonball Xenoverse DLC
Gun Mettle campaign pass
offers
The above pretty much sums it up. My inventory is public, don't be afraid to take a look.