Indie Royale has the The Mixer 18 Bundle live at their site.
Pay the minimum (currently $3.11) for:
Rooks Keep
Platypus
Millennium 2 – Take Me Higher
Spoiler Alert
Train Town
Probably Archery
Eron
Trainz Trouble
Terra Incognita ~ Chapter One: The Descendant
pillar
All titles activate on Steam.