I was always disappointed in the past when I tried gambling, so I don't really like trying my luck anymore, but this time I had an incentive because I wanted to buy Hard West yet I never did it because I don't really want to support the "fair price" regional thing.
I bought 5 stars, got:

Gonner
Hybrid Wars
Crime Cities
Bad Mojo Redux
The Swindle

I didn't really want any of those, but at least Gonner and The Swindle seem playable. The other ones are completely uninteresting for me, so I'll take them as "you won nothing" results.
Well, at least I got Hard West.

Strategic Command Euro Theater
Kathy Rain
Scanner Sombre

Strategic Command is not worth $3, but the other two look decent.

i bought 2 stars and got homeworld : desert and old crap (timelapse)

i think myself lucky, and i'll stop immediatly : the whole list of star games seems fully uninteresting (mostyl cheap or old games)

Got refunds for these star deals:

Uplink: Hacker Elite
Kathy Rain
Quest for Infamy

And using the wallet funds I got these star deals:

This War of Mine: Soundtrack Edition
Kyn
Serpent in the Staglands

the swindle is really fun and hybrid wars isn't bad.

Wuppo
Diluvion

Thank you for maintaining this list, Starmaker! +1

I just finished going through the games:
45% of the games I would absolutely hate, should I get them
40% of the games I would love to get
15% of the games would result in a great deal, should I get them, but I wouldn't even try them for a long time, if ever.

I shouldn't be gambling, but my nature might get the better of me. This type of sale is the only one I hate from GOG.

EDIT: Actually the more I'm looking at my selection, the more I realize it's more like this:
45% of the games I would absolutely hate, should I get them
15% of the games I would love to get
40% of the games would result in a great deal, should I get them, but I wouldn't even try them for a long time, if ever.

Looks like there should be 200 mystery games...

Titan Quest Anniversary Edition
Space Rangers: Quest
Ys: The Oath in Felghana
Holy Potatoes! A Weapon Shop?!
Delta Force: Black Hawk Down Platinum Pack

I dropped $50 on the stars just for fun
I got some junk I will never play but also a couple of great value games:
-Homeworld: Deserts of Kharak
-Beat Cop
-Space Rangers HD: A War Apart
-Hybrid Wars
-Empires: Dawn of the Modern World
-FlatOut 2(on sale for $2) less than a star cost
-War for the Overworld: Crucible
-Act of War: Gold Edition
-DEFCON
-Soldiers: Heroes of World War II
-Think of The Children
-SOMA
-<Observer
-Dead Synchronicity
-Bad Mojo Redux
-Phantom Trigger

I had no luck :-(

BIT.TRIP BEAT
BIT.TRIP Presents... Runner2: Future Legend of Rhythm Alien

Scanner Sombre,
Observer,
Space Empires IV Deluxe,
The Moment of Silence,
Else Heart.Break(),
Warrior Kings: Battles

I got right now:

Double Dragon Trilogy

Just bought a few stars and got a game that's not on the first post list:

I Have No Mouth And I Must Scream