Regions of Ruin, a 2D pixel side-scrolling RPG with town-building will be free on Steam from April 4th to April 7th along with a Sieges DLC. Get it now and keep it forever.
Gang of Four, an exciting card game of cunning and strategy will be free on Steam from April 2nd to April 5th. Be the first to get rid of your cards and ascend to supreme power!
Clandestinity of Elsie is a Survival/Psychological-Horror game on Steam that has just turned completely free, forever. The game has Very Positive reviews and it's worth a look.
School Years, a series of visual novels adapted from a real story will be free on Steam from April 1st to April 2nd. Get it in that period and keep it forever!