Cook, Serve, Delicious (and it's sequel) are actually really fun. The basic premise is the classic "restaurant" game where customers come in with specific orders, and you are require to cook the order with the specific combination they want (a plain hamburger vs a double double cheeseburger with extra pickles). What's cool is there is kind of an RPG element, where you own a restaurant, pick a number of items for your menu each night, with different modifiers that affect the number of customers and how much they pay. The RPG elements are played up more in the sequel, and you can really customize the look of your restaurant (seating, tables, decor, etc).
Crashlands is basically Don't Starve, but way more humor-oriented, and self-referential (breaking the 4th wall type of stuff). I don't have a ton of hours in it but if liked Don't Starve, you'll definitely like this.
12 is better than 6 is another game which I don't have much playime in, but it's basically Hotline Miami, but in the Wild West. It's interesting because now you're using revolvers and shotguns, so you really have to consider how many shots you have left (Well, to tell you the truth, in all this excitement, I've kinda lost track myself...).
Having said all that, and not having played the other games, the $12 tier seems kind of a hard sell.. I'd imagine it be tempting to console players who recently switched to PC, and are accustomed to inflated console prices. Recently got a PS4 and the pricing structure of games on there have fucked up my sense of pricing and what would be considered a "good deal".