Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Sci-Fi RPG system

The Gamemasters Guide is an excellent resource for anyone who has tried Alternity and wishes to host thier own campain. The guide covers all the areas that you need to run a successful game. The Alternity game systems really makes it easy for the GM to be able to manage a good sized group without getting bogged down in complicated rules. Your players will have a blast! This is an excellent gaming system to start off with as well, since it is so strait forward. The game mechanic is simple, but allows for alot of depth and completeness depending on your tastes.Quite often in other game systems problems arise that are difficult to resolve with the rules, with Alternity Guide not only are the rules well organized and complete, the number of rule problems are minimal because of the efficent game mechanic and well written guide.If you are thinking about purchasing this Guide, it wouldn't be a mistake. It is well worth just to read and see the artwork throughout.