I don't know what happens to Ninja Theory but damn... they really can't get a break.
The studio has only put out 3 games on current gen: Heavenly Sword, Enslaved: Odyssey to the West and the Devil May Cry remake (DMC: Devil May Cry).
The company showed great production values in every single title it has released, but all of them have failed to get the attention they deserved. Judging by the sales figures of each title, I know many of you haven't played them and it's really a shame. Since they are cheap now, it really is a good chance to play those amazing games before this generation is over.
I kind of understand why Heavenly Sword haven't sold well. It was an early PS3 exclusive, released in 2007, and no one could have predicted that Sony would screw up the PS3 that hard. I mean.. they ruled with the PS2, so Ninja Theory made a honest mistake in thinking it would rule once again. But the game is AMAZING. It features a fast paced gameplay with an excellent combat system and fantastic production values. I mean, Nariko, the red-headed protagonist, is dubbed by Anna Torv (yeap, Olivia Dunham from Fringe). The main villain, King Bohan, is dubbed by Mr. Andy Serkis (Gollum from LotR) himself. They not only did the voice over, but they have also participated in the motion capture. Needless to say, the game features an amazing performance of them both. The soundtrack is also very good.
Ninja Theory tried to fix the "exclusive" mistake by taking the multiplat route with Enslaved: Odyssey to the West. Again, showing extremely high production values, the game features amazingly beautiful graphics and scenarios, with a brilliant, colorful and original post apocalyptical world. The relationship between Monkey, the protagonist, and Trip is fantastic and the story is intriguing and very well written. Once again, Andy Serkis is back providing the voice over and motion capture as the lead character. Basically, it elevates everything that was already good in Heavenly Sword.
Ninja Theory's latest game, the Devil May Cry remake, is one of the best (if not the best) action/hack 'n slash/beat' em up game of this generation. Period. The gameplay is awesome and the excellent combo system never gets old. The story is also very good. A must play for fans of the action games.
TL:DR version: If you have the chance, play Ninja Theory's games. All 3 of them are fantastic and truly AAA titles that somehow failed to get the love of the public (although being very well received by critics).