We don't call it Recess in england, we just call it break, because we like to be boring, and all that.
So anyway, my favourite break time activity when i was at school was...
British Bulldog
For anyone who doesn't know, the aim of the game was to get to the other side of the playground without being touched, and the last one left standing is the winner.
At the start their would be one chaser, which would then touch someone who then would become a chaser in the next round when everyone left has gone over to the other side.
Every time a new round starts, someone shouts British bulldog 1, 2, 3, and all the chasers start in the middle (or the other end) of the playground.
It was amazing, especially when most of the playground was in on the game. Sadly i only played it when i was in juniors.
Seriously, you've never lived until you have played British bulldog.
EDIT: holy crap, they banned it in some schools nowadays, health and safety is going out of control!
http://en.wikipedia.org/wiki/British_bulldogs_(game)