Don't get me wrong, the book wasn't the worst I have ever read, but it did not follow the plot line. I mean, get serious! DOOM isn't about finding new worlds! It's abotu shooting things. The first and second books kept to the plot, then the third and fourth acted like they had a high and mighty purpose in life. If you want to read a book about discovery, read Star Trek. If you want to read about a bunch of aliens and zombies getting fragged, read DOOM. Or, at least the first two books.