The Endless Franchise is currently 75% of on Steam.
I haven't played them, but they've picked up masses of critical acclaim so I'm definitely going to check them out. Anyone else tried any of the games?
I've played both Endless Space and Endless Legend. They're both very well-made games, in my opinion, Endless Legend more so (end-game warfare in Endless Space between forces close to parity could get really wonky, so I have to dock it a couple points for that). I especially like Endless Legend's take on cities--they've actually managed to make them feel fresh compared to... everybody else's 4X games, in my opinion.
Of course, this recommendation comes far too late after the sale to matter, but I'll throw it out there anyway.
I've put a good bit of time in Dungeon of the Endless, it's a fun game, multiplayer is fun but a bit glitchy in certain circumstances.
I've been thinking of picking up Endless Legend, wish I would have noticed it when it was on sale.
I have 55 hours playtime for Endless Space and 27 for Dungeon Of The Endless... Great games. Though Dungeon required some time to get used to its mechanics.
I have yet to get Endless Legends.
Endless Space is a good game, fairly simple overall so managing a big empire doesn't feel weird, but the combat does get wonky as someone else noted.
Dungeon of the Endless is very cool and an awesome concept.
Endless Legends is very cool, though I haven't played much of it.
Endless Space 2 is in early release, i've heard good things.
Side note: I ended up writing a 22 page player's guide for a 5E campaign using the Endless Legend world (though I just copy pasted 1/2 of it from the wiki).
I played Endless Space quite a bit, and wrote an extensive review on Steam. In short, faction customization is awesome, empire management is quite enjoyable and battles are a bit odd, with the limited options to influence them.
What I saw and read about Endless Space II some months ago looked like a letdown, but things might have changed.
Didn't try Legends and Dungeon from them, too bad I missed the sale. Thanks for posting it, anyway.