[PC+MAC] Lume $6.29 - SpaceChem $7.49

2 Great STEAMPLAY (Pc+Mac) games under $8:

-Lume

An adventure/puzzle game that features characters and levels completely made out of paper and cardboard and filmed entirely in HD. The power in your granddad's house has failed and you must solve a wide range of paper puzzles to restore it. Along the way you discover a deeper mystery behind the blackout. Also the game is part 1 in a series so I'm anxious to see what will come next.
[Screenshot 1] [Screenshot 2]
Lume on Steam $6.29!

-SpaceChem

Take on the role of a Reactor Engineer working for "SpaceChem - the leading chemical synthesizer for frontier colonies!" Construct elaborate factories to transform raw materials into valuable chemical products. Streamline your designs to meet production quotas and survive encounters with the sinister threats that plague SpaceChem. An ambitious new design-based puzzle game.
[Screenshot 1] [Screenshot 2]
SpaceChem on Steam $7.49!