to what is actually going on around him. For instance, Frohman fails to realize that his return-addressed letters to Doctor Breen reveal his location, and so result in that location being invaded, bombed, or otherwise compromised. The comic contains many references to events and objects in the game. In one comic, Frohman makes a clerical error that causes the Combine to order far too many explosive barrels, thus suggesting an explanation for the barrels' ubiquity throughout City 17 and beyond. In another, he writes a letter to Dr. Breen asking why using his flashlight reduces his ability to run, a reference to Half-Life 2s flashlight and sprint functions using the same power source. In a further strip, the town of Ravenholm becomes the headcrab-infested ghost town seen in Half-Life 2 after Frohman writes to Breen expressing his happiness with being there, giving away Ravenholm's location. Indeed, Frohman causes (intentionally or accidentally) many of the disastrous circumstances that Gordon Freeman runs across. He accidentally gives Breen the idea of headcrab shells while on a radio, and sets up all of the traps in Ravenholm himself in an attempt to catch Father Grigori. It is also revealed that, at the Black Mesa Research Facility, Frohman causes the resonance cascade that allows for alien forces to invade in Half-Life by accidentally delivering a wedge of cheese, instead of the intended test sample, to the test chamber where the cascade flashpoints. Half-Life: Decay, however, indicates that Dr. Gina Cross is responsible for this task. Livingston admitted he did not play Decay, and thus was not aware of its storyline. He also stated that the comic takes place in the PC version of the Half-Life continuity, and since Half-Life: Decay was never published for the PC, it does not affect the comic. Reception The comic has had positive reception from both the public and editors of various gaming magazines. The Globe and Mail stated the comic "stands out from most other gamics (comics consisting of game screenshots) by virtue of the quality of its writing and presentation". Online magazine GGL.com said that "Concerned is one of the funnier online gaming comics, and perhaps the best single-game parody in the bunch", and The Irish Gamers described Concerned as a "hit webcomic". Computer Gaming World called the comic "funny" and featured two exclusive three panel comics not found anywhere else, while PC Zone described it as "mildly