Playism’s catalog of games is now on sale on both their own store and Steam, to celebrate their 5th anniversary. You can also grab a collection of their top games as a bundle on Steam for 50% off. The anniversary sale lasts until 5/25, and the Steam sale will last until 5/18.
Anniversary Sale: http://playism-games.com/games?sale=true
Steam Sale: http://store.steampowered.com/bundle/356/
