Critical Breach puts you in the role of something like one of the low ranking scientists working for the bad guys in the Resident Evil games. The kind of white-coated underlings who do the dangerous lab work on the zombie DNA and are first to be torn apart when some giant mutant springs out of a petri dish.
The game has a core of two busy lab rooms sporting computers, scanners, medical miscellany and one specimen cage containing your charge, the horrible Scorpig. Your goal is to implant a chip in that little bastard, a procedure which does not go routinely. This main part of the game is very satisfying, coming on like a significant but not overly tough set piece from a larger adventure. There's good interactivity amongst the many props at your disposal, a fair bit to do and a fair bit to work out. The game successfully conveys a feeling of the dangerousness of the PC's situation without ever killing the player. I did get stuck once, at which point I consulted the walk-through and discovered that (Spoiler - click to show)a particular object which common sense had told me would never fit inside another particular object actually did – so I blame the game's failure to make clear the size of this object.
Unfortunately, the post-Scorpig section of the game is poor. It may also be short, but it dragged down my experience with its relatively lame implementation (EG a vital noun makes no appearance in the prose at any point), vagueness of purpose and possible bugginess. I was stuck in one room for ages, and when I turned to the walk-through, it didn't work – (Spoiler - click to show)nor did its instructions on getting either of the game's endings.
I was tempted to lop a star off my score for the messy endgame, but I felt that would fail to accurately reflect the fun I had in the laboratory section, which comprises the bulk of Critical Breach. I had also been expecting a small game from the outset, and wouldn't have minded if it hadn't continued beyond the lab anyway. It's a good and basically satisfying dose of puzzle in a sci-fi setting. An update to the endgame would be great, though.