Started playing Invisible Inc. on PS4 last night as part of this months free PS+ games and it is amazing. It's a great procedural generated turn-based stealth game with a great top down 3D perspective. The plot of the game is that all the world's biggest corporations have total control of the planet and are hunting you down. They attack your HQ right after the tutorial mission and you have 72 hours (this can be reduced down to 36 or put up to 120, or even play it endlessly) to gather as many resources as possible before attacking their central server. In each operation you control up to 2 agents and have 1 objective to complete before escaping the facility. Time goes by quite quickly so even with 72 hours you might not even have time to do 10 missions before you need to attack the central server, although it depends on how far away a mission is from your last as you can end up spending 12 hours just by travelling to a mission.
Every level is procedurally generated and you can greatly customize how they are generated before starting the campaign, you can choose how many rooms there are (8-20), how many guards, safes and terminals, severity of the alert system and much more. You can even customize how much cash you start with (up to 10000) and the multiplier by which you earn it.
Gameplay has a huge emphasis on stealth as 1 bullet knocks you down and everything is turn based. If one of your agents is down they have to be dragged to the teleporter before you leave or they go into MIA status where they can't be recovered. The different missions give different rewards, so sneaking into a prison facility can get you a new agent to choose from while vaults give you heaps of cash, executive terminals give you new consumables and a few more I haven't tried out yet. Vaults I'd say are the second hardest as you need a special key card to get into them but there's another that requires you to knock out an executive and stay with them while HQ hacks their neural interface (I think that's what it's called) to get information, which requires you to stay in 1 room for 5 turns while guards approach.
You also don't have a gun initially so you have to start by getting up close to guards to stun them but you can get one by sneaking into a weapons facility if one pops up, which also requires you to plan your tactics around moving around guards, observing their patrol patterns and choosing when and where to stun them. Stuns only last for 3 turns, although Banks (one of the agents) has a syringe that can keep them down for another 3. Staying on the same tile as a downed enemy also keeps them pinned so they can't recover until you move.
And once you get near the end of a level things can get really tense as the guards close in on you and you're desperately trying to get to the teleporter as soon as possible without running into enemy guards, which is made even trickier as there's a fog of war type effect where you can only see where your agents can see, or where any security cameras you've hacked are looking.
Overall, a really fun stealth game with brilliantly generated levels, tense moments, smart-ish AI and incredible gameplay mechanics. 8/10
I also picked up METRO REDUX on XB1 today which I look forward to start playing later today, and will probably write a small review about it by Christmas.