Courtesy of Reddit /gamedeals.
Game list:
Resonance
Botanicula
To The Moon
Gemini Rue
Alan Wake's American Nightmare
Blackwell Bundle
Torchlight
Uplink: Hacker Elite (otherwise known simply as "Uplink")
Geneforge 1-5
Machinarium: Collector's Edition
Spacechem
Defcon
Trine
Symphony
Darwinia
Mutant Mudds
Anomaly Warzone Earth
Multiwinia
Unmechanical
The Ball
All of these titles are DRM-free and do not chainball you to Steam/Origin etc.
My top pick recommendations:
Botanicula - _graphically good point/click adventure_
Alan Wake's American Nightmare _RRP $15 from Greenman_
To The Moon _RRP $10_
Trine RRP _$6.99 from Greenman_
Machinarium _$0.01 from past Humble deals, but great to have if you enjoy point and click games_
"do not chainball you to Steam/Origin etc."
…. but can they be?
FYI some excellent games:
Torchlight, Trine, Darwinia/Multiwinia, Alan Wake
And if you ENJOY programming:
Spacechem