Featuring little to no combat, this is a fairly competent little "semi-episode", with clever reuse of existing assets from various Valve games, pretty mapping, well suited licensed music, and a few interesting puzzle ideas. Still, a few points hold this back from being an instant classic: It's very short, if you have half a brain to stand on, you'll breeze through in half an hour, including 10 minutes of non-interactive cutscenes, still pictures and credits. Furthermore, the environments, while well constructed, could have used more variety than a series of simple rooms, and last but not least, the horrible engrish translation breaks the game immersion quite dramatically.
Still, if you have a bit of time to kill and feel like scratching your head a bit, this is quite worth the download. Let's hope the next episode improves on the formula!
The opinions expressed in this mini-review are the subjective views of the poster alone and are not to be considered binding evidence in an international court of law.