As usual, if you only have an Xbone, be sure to check the marketplace, as AAA titles tend to go on sale acros platforms at the same time.
Kind of bummed that these deals pop up just as some great games are around the corner, but hey, what are ya gonna do?

[All PS4 Deals] (Be sure to log in to get the PS+ prices).

Titanfall 2 ($23.99)- A really good campaign (just shy of greatness) that's worth the price of admission alone, the multiplayer is some of the smoothest, polished, and rewarding in a long while.

Life Is Strange ($5.99)- One of the best non-Telltale choice-based story games, getting the whole thing for $6 is a steal. Definitely recommended. If you do want a Telltale game, though, their Tales From The Borderlands is on sale for $9, and they perfectly nail the humor and writing quality from the games.

Rise of the Tomb Raider GOTY ($29.99) A pretty good follow-up to Tomb Raider that comes with all DLC content. While I didn't like it as much as I liked the first game, the game is definitely meatier, and occasionally challenging. If you don't want to pay full price for next week's Horizon: Zero Dawn, this is a good option (or you can get The Witcher 3 for $25).

The Witness ($19.59)- Seems a few folks around here are enjoying the recently-patched game, and now you can see what all the hubbub is for half the price!

Inside ($7.99)- A bit of a disappointing followup to Limbo, but with a handful of neat puzzles (if you're looking for the hidden objects). Some folks seem to really love it, and at $8, it's worth an evening with friends or family for discussion (plus, the ending is pretty crazy, in a good way).