Lifeless Planet is not just a game. It's a Science Fiction book that you "read" by playing the game. The story is one of the most interesting SciFi ones I've played, watched or read. Well, there are some exaggerations about what the Soviets were supposed to have done as an "experiment" to one of their own... Anyway, I'd say it's equally good to the Dig's story. It's about exploring the once-inhabited-now-lifeless world you're on and that's the best part of it. Exploring the unknown. The graphics are really good as well as the sound. The gameplay is fine (could be a bit smoother in some cases but nothing serious) and it's as "repetitive" as every other game. I'd recommend it to anyone who likes SciFi, either if it's literature, movies or games.
