StarCluster2 (from here on "SC2")is a Sci-Fi RPG with a great concept and setting. The book though is heavily flawed in it's layout and explanation of rules.
The basic concept of SC2 is that the people of Earth find out that the world will be destroyed in 300 years.Then the mad rush to get everyone out begins by transporting people in sublight ships to the cluster. The problem is that the ships are so slow that they actually have less than 300 years to evacuate and get out to the area of destruction. They then begin to send on the younger people because the elderly will die of old age long bfore they can get to the cluster.
Once they arrive in the cluster and begin to settle the area they come in contact with other humanoid races. It turns out that these "aleins" are actually humans that were taken form earth and moved to the cluster by a highly advanced alien race so long ago that they have evolved. while they resemble human they have mutation that have helped them adapt to their new home.
The cluster also has true aliens that pose threats and others like the Guaru who are allies to humankind.
While i like the setting and the basic premise of SC2, I should also comment on it's short fallings.
First the layout is not good. The section on character creation that contains all the tables with the education paths and careers wastes space. If the tables were mroe tightly formated and empty spaces not left on the lower parts of the page, the book would have a lower page count or contain more setting info (SC2s strenght). Overall could be more space efficient and leave less "open" spaces.
Second the while the system is playable(if you like the BRP system for CoC you will like this) it is not very well explained. Even and a player who has played a lot of RPGs might have some dificulties understanding the rules as written. The biggest problem is the fact that there is no place in the book that actually tells you in plain english how to resolve an attack or how armor is used.
Overall well worth a look for the setting info and overall good concept. If layout issues bug you or if you are new to RPGs you may want to look elsewhere.
LIKED: New and different sci-fi setting. Well supported product line.
DISLIKED: bad layout and does not explain the rules well.