The Witcher series is currently on sale on Steam until June 18. Deep discounts. If you want a "pure" RPG experience, these are must play.

Careful, though. Steam's Summer Sale is upcoming, discounts might be as good or better then!  

-86% off,The Witcher - Enhanced Edition
store.steampowered.com/app/20900/The_Witcher_Enhanced_Edition_Directors_Cut

-85% offThe Witcher 2: Assassins of Kings - Enhanced Edition
store.steampowered.com/app/20920/The_Witcher_2_Assassins_of_Kings_Enhanced_Edition

-60% off The Witcher 3: Wild Hunt
See More