So far:

Shadows: Awakening – Necrophage’s Curse
Kerbal Space Program: Breaking Ground
Pathfinder: Kingmaker - Beneath The Stolen Lands
Kerbal Space Program: Making History

There are several others on my radar, but not sure yet if I want to grab them. I've already got more games than I'll ever need or have time to play before I shuffle off this mortal coil.

Now's your chance.

I got lots and lots. This is the first big sale in a long time I've felt compelled to spend a bit on. I think its because of the bundles. They seem like quite good deals if you're interested and don't own any of the games already. I think I spent about as much as I did during my first winter sale here (several of those games still sit on my shelf unplayed, hopefully these won't stay that way).

Obduction
Bioshock
Into the Breach
Call of Juarez
Iconoclasts
Cosmic Star Heroine
Bioshock Infinite
observer
the 5 x-com games
Transistor
Tower of Time
Hob
Sudeki
Project Eden
Omikron
To the Moon
Gorky 17
Sundered
Fear Effect Sedna

The Soul Reaver games with French language to replace my discs, beside Blood Omen 2 i already had here and still lacking translation.

Syberia 3 - The Complete Journey that was at a great discount, 6.99 euros iirc.

Bought today/yesterday:

Geneforge saga and original Avernum games(to support Jeff/spiderweb and enjoy them)

Technobabylon/Resonance/Shardlight(To support Wadjet Eye)

Stasis/deluxe(Bought standard and the upgrade as it is cheaper for me to do it that way)

Sin GOLD(great game)

Cornerstone: The Song of Tyrm (daily deal)
Project Zomboid (daily deal)
Dungeon Souls
Battlevoid: Harbinger
Fear Effect: Sedna
Pharaonic (daily deal)
Vikings: Wolves of Midgard (daily deal)
Sundered: Eldrich Edition
Bioshock Infinite
Chuchel (daily deal)
The Metronomicon + DLC
Odbuction (free)

Might get the two Beamdog D&D remasters I'm missing if I have the budget and the daily deals continue to be less exciting this week.

I picked up The Ultimate Doom and X-COM: Terror From the Deep for some nostalgic good times. I had been hoping the Telltale catalog would last until the summer sale, oh well.

Summer Sale games I bought so far:

Bastion & Bastion OST

Transistor & Transistor OST

Recently returned home from a 3+ month long hospital and rehab stay. Realized how much I missed (Obduction :'( ) and saw a few things that said "Buy us". Those things were:

Blood: Fresh Supply - which I could have got a discount on, were I not released 1 friggin' day after the 50% OUWB offer expired! ARGH!
Bioshock Infinite
Jazz Jackrabbit Collection
Jazz Jackrabbit 2

Then I went and dumped a bit of money in a few other places.

Adding some more

Mission Critical
Battle Isle: Platinum
Battle Isle: The Andosia War
Gangsters: Organized Crime
Project Eden
Alien Breed + Tower Assault
Black Moon Chronicles
Archimedean Dynasty
Shadow Watch
Jazz Jackrabbit Collection
Jazz Jackrabbit 2 Collection

Wished for more but this is what i got:

Capitalism Plus
Pinball Gold Pack
Pinball World
Galactic Assault: Prisoner of Power
Fear Effect: Sedna
Wings of Prey: Special Edition
Serious Sam: The Second Encounter
Pharaonic
D4: Dark Dreams Don't Die - Season One
Triple Town
Ground Control Anthology
Lords of Magic: Special Edition
Lords of the Realm: Royal Edition
Ground Control 2: Operation Exodus Special Edition
Empire Earth 2 Gold Edition
Celestian Tales: Old North
Evil Islands

Also big thanks to Cyan and GOG team for Obduction freebie.

I got the Pajama Sam Vol. 1 code. ;)

Diablo
Baldur's Gate 1-2
Forgotten Realms Archive 1-3
Jazz Jackrabbit 1-2
Anvil of dawn
Star Trek 25th anniversary
Star Trek Judgement Rites

Redneck Rampage
Shadow Warrior Classic Redux
Raiden IV: Overkill

Tempted by:
Warlords Battlecry 2
Sid Meier's Covert Action
Sword of the Samurai
Darklands
Albion
Stronghold Crusader HD
Spycraft: the Great Game

What I actually bought:
Warlords Battlecry 2 XD

Deathtrap
Imperium Galactica II: Alliances
Age of Civilizations II
Avernum 3: Ruined World
Obduction