Hi there! Are you interested in something from these for XCOM pack?
STEAM keys:
Alpha Kimori 1, Bridge Constructor, Critical Mass, Draw a Stickman: EPIC, Fieldrunners, Final Slam 2, Frozen Synapse, Galcon Legends, Galcon Fusion, Gravity Badgers, Hoard, IL-2 Sturmovik: 1946, Infected: the Twin Vaccine, Ittle Dew, Journey Down: Chapter One, Legends of Aethereus, LYNE, Pid, Ravensword: Shadowlands, Redshirt, Sang-Froid: Tales of Werewolves, Skyborn, Syder Arcade, Soulbringer, Savant - Ascent, Sideway™ New York, Shufflepuck Cantina Deluxe, Starseed Pilgrim, UFO Extraterrestrials Gold, Ultratron
STEAM gifts: Ghost Master, Gun Monkeys
Want any of these games for X-Com Pack:
A New Beginning - Final Cut
Afterfall Insanity - Extended
Anomaly 2
Bardbarian
Broken Sword 2
Captain Morgane and the Golden Turtle
Darkout
Day One Garry's Incident
FEZ
Fieldrunners
gemini rue
Giana Sisters Twisted Dreams
HOARD
Ittle Dew
Knights of Pen & Paper +1 Edition
Little Inferno
M U D TV
Mata Hari
Natural Selection 2
Papo & Yo
Paranautical Activity
Sentinel
Shadow Man
Shivah Kosher Edition
Sid Meier's Civilization III
Skyborn
Stacking
Sweet Lily Dreams
Syberia II
Toki Tori 2+
Unearthed Trail of Ibn Battuta - Episode 1 - Gold Edition
Vanguard Princess
Zack Zero
Zeno Clash
Humble bundle link