5/10
As others have said, the current game is missing so much, so it's surprising that it earns those 5 out of 10 at the moment.
The AI sucks, there is no multiplayer, only one race which is only half implented, etc.
I wager to say, that multiplayer alone (or a decent AI respectively) would give it +1.
The inclusion of the other two races probably another +1.
Balancing of the current abyssimal culture system: another +1.
This would give it a 8/10 with extensions that are sure to come.
So, in the end, the game will probably end up higher then 8/10, which sounds good to me.