Calling this game an adventure is slightly misleading, cause 15 Days is more a movie-like experience with puzzles - which is a good thing, cause the puzzles are actually the weakest part of the game.
15 Days is a pretty good choice for gamers and adventurers are looking for an interactive film rather then a videogame, or for those looking for an adventure game with a low level of difficulty.
An interesting story premise does not make up for the ridiculous puzzle design and some technical glitches. There are many better adventure games out there - you should avoid this one.
Maybe the best story that can be found in videogame (ever) is undermined by the slight absent of playability. 15 Days is definitely a great interactive movie but as game it is just average. [July 2010]