What HL2 should have been.
Fast paced, fun, explosive, and incomplete, SiN : Emergence is one of the saddest things in the universe.
This was supposed to be an episodic series of short first person shooters (this may not have been the smartest idea), but the company went bankrupt and was bought off to make casual games after half of the team left the studio.
The company was killed by ridiculous marketing. Nobody in their right mind would pay 10 euros for a 2-3 hours long episode.
However, I consider this well worth the asking price.
Not only for the original SiN (it's pure gold) but also because this little episode is very interesting.
The core gameplay manages to be fun and stay fresh with only 3 weapons (A very reliable pistol, a shotgun, and an SMG), incendiary grenades, a melee attack, and a secondary fire for every weapon.
That's pretty impressive.
The level design is very similar to something like SoF, with some elements borrowed from HL2.
Think HL 2 on steroids.
You're constantly running around, jumping, shooting stuff, and fighting your way through well designed arenas.
The experience will leave you wondering what amazing things could have come from Ritual.