Green Man Gaming offers downloads of Quantum Conundrum Season Pass for Windows
for $4.99. Coupon code "GMG25-1BW0K-K1A3G" cuts it to $3.75
. That's tied with our mention of the standard edition from two weeks ago (which didn't include two DLC packs) and the lowest price we could find for the standard edition by $11. This edition includes two DLC packs. Deal ends September 12.
Of note, this game requires a Steam account to activate.