Hi

Another option is to check out:
http://www.englishforum.ch/social-events/

Every sunday a five a side tournament is organised. (Note: It is outdoors)

Last sunday's thread is here:
Sunday Five-a-Side Football, Zurich Downtown

Uncle Max will create a new thread for next Sunday around Tuesday or Wednesday.

It's always in the same place (Schanzengrabenpromenade School Yard) and at the same time 12.00.
If you are coming don't forget to register.