SiN is a 1998 FPS game using the Quake 2 engine created by Ritual Software and published by Activision. While it was overshadowed by Half-Life on release (still trudging through that, stuck on Gonarch's Lair where she's glitching), it was a bit revolutionary gameplay wise. It was the first game where you could fully interact with consoles that could alter things in the map (like open doors and turn off enemy turrets). Combat is kind of wonky to start out, but you get used to it as the game goes on as your arsenal increases. The plot of this game is absolutely ridiculous, straight out of a sci-fi/cop b-movie. The ending sequence literally had me burst out laughing because of how absurd it is. The difficulty curve in this game is absolutely ridiculous at some points, though. Snipers can eat away at your health in seconds if you don't have armor (luckily they are only in certain levels), and while stealth isn't really my strongsuit (see my review of Jedi Outcast) this game does it decently enough. Despite the flaws this game has, I can't help but enjoy it because of it's over-the-top cheesy plot.