As for the main parks, there were indeed quite a few trees, some of them even had something like treehouses, while others just had branches occupied by a napping orc.
There was a central gathering area and a clan fire. People would gather there and dance during events like weddings.
Other than this, the only other area for entertainment was the sparring grounds. For a village, there was a lot of this; about every few blocks, there was something.
Orcs weren't really ones for idle gossip and chatter, and their socialization had to do with fists.
Other than a lot of sparring areas, they also had larger roads for swift runs, and there would always be a few who would dash through it at a time. Some hopper-type orcs like rabbits and kangaroos would jump over the one-storey buildings effortlessly.
Buildings were non-scalable, but that didn't matter if the citizen could literally leap over it.
