Hobbies :D

I love reading books. I always have something to read because it is entertaining and it also helps me with my general culture. Among my favorite genres there are fantasy and suspense. My favorite authors are J.R.R Tolkien, George R.R. Martin, Jules Verne, Michael Crichton and Alex Kava.

Another interesting hobby is playing board games. I’m in a group and we usually play every Friday. We always play new games, individual, role plays and cooperative games. Nowadays we have started designing a new game, we brainstorm and we are designing a beta game called “bugs attack” where we make statistical calculations and tests. ?!? Interesting.

Finally, I like playing table tennis. I also enjoy watching movies with friends or family.

(My) Hobbies :D

I love reading books. I always have something to read because it is a good way of entertainment and it also helps me with my general culture. (This is a bit awkward, because you aren't saying why you have something to read but jumping to something not stated. You could say, "I always have something to read. I love reading them [books] because....etc.") 

Among (< this could be deleted. You could say 'My favorite genres' or 'Some of my favorite genres') My favorite genres there (< not needed.) are fantasy and suspense. My favorite authors are J.R.R Tolkien, George R.R. Martin, Julio Verne, Michael Crichton and Alex Kava.

Another interesting hobby, that I have, is playing board games. I’m in a group and we usually play every Friday. We always play new games [some of them being] individual, role plays and cooperative games. Nowadays (< We would typically use 'Currently'), we have started designing a new game. We use have brain storm ideas, and we are designing a beta game called “Bugs Attack” where we make statistical calculations and tests. (< I don't understand this last part. The highlighted section.)

Finally (can also use Lastly), I like playing table tennis. I also enjoy watching movies with friends or family.

     - either delete or reword/change

--- - wrong

--- - opinions or more casual ways of saying it

You did well! Please keep studying English!!! \^o^/