I played this amazing casual card game awhile back called Fairway Solitaire and have been waiting for a good deal on it ever since. I wasn't willing to spend $20 on a casual PC game, and I'm glad I didn't! You can now get the full download for free from Big Fish Games using a promo code. There are actually quite a few freebies right now if you're interested, but definitely check out Fairway Solitaire! For the games with promo codes, you'll need to click 'Buy Now' to put them in your cart, then apply the code to get it free. You'll need to create an account on the site. Here's the full list:
Mahjong Towers Eternity - Click Here
Mystery Case Files: Huntsville - Same link as above
Mystery Case Files: Ravenhearst - Code: HOLIDAYRAVEN
Hidden Expedition: Everest - Code: FREEEVEREST
Azada - Code: FREEAZADA
Spa Mania - Code: FREESPA
Fairway Solitaire - Code: FREEFAIRWAY