Pretty much everything published by Klei Entertainment can be tried out for free on Steam this weekend, with a sizable discount on anything you want to play for longer.
To me, the “big ones” are probably turn-based stealth-’em-up Invisible, Inc. and rhythm roguelike Crypt of the Necrodancer, but you might disagree. You might somehow still not own Mark of the Ninja or Don’t Starve. Or perhaps you do own all of these, but are sharking for Shank or have a craving for Eets Munchies? Welp, you can try them all out for free, with discounts on the games ranging from 40% to 85%.
The games’ DLC is also on sale, but it’s all a bit pricier. Invisible, Inc.‘s Contingency Plan DLC only came out today, so that’s only got a discount of 10%, and Don’t Starve Together – the stand-alone multiplayer version of Don’t Starve – is only 33% off. Then again, that does come with two copies of the game.
Have a look at the Klei Steam sale page and see if anything piques your interest. I’d totally recommend trying out Invisible, Inc. and Crypt of the Necrodancer while you have the chance, though.