Winter Quest Fest sale right now. If you've ever wanted to take Sierra's Police Quest, King's Quest, Quest for Glory or Space Quest series for a spin, then you'll definitely want to check out what's on offer.
In addition to the many adventure-based Quest games, GOG is also discounting the Gabriel Knight series, Phantasmagoria, The Zork Anthology and classic strategy game Call to Power 2. Each game in the sale is available for under $4 and many are even under $3.
The sale lasts for the next three days, so if you're interested in snagging some classic games on the cheap, head on over to GOG and peruse the goods.