They are all quite unique and interesting and as the series goes on the characters all get a lot of development. Ones the manga starts it's second half the story becomes very mysterious and it manages to keep you hooked till about the end. The last few chapters are a bit rushed, but they are still fun to read.
My main gripe with this series is the use of pixel art early on. It contrasts a lot with the regular art and not in a good way. It is annoying and not nice to look at. Luckily as the series goes on the use of the pixel art get's a lot better and that makes reading the series a lot more enjoyable.
I think that the Game Devill is a decent read, nothing to special but it stays fun the whole way through.
