Most arcade games are about surviving the swarm rather than thriving in it, if the community knows of any nice arcade games that are from the zerg perspective please let it be known.
Also I know that HOTS will be out soon but did anyone have so much free time that they made a few single player or better yet co-op zerg campaign missions. Sort of just a fun single player style arcade game.
And finally.... Co-op campaign missions in general. Any race, as a co-op mission with a friend would definitly be worth my time.
Feel free to support your own games. XD