Aftermath is an allied 3v3 StarCraft II multiplayer map. It was released for the 2015 season 1 ladder map pool for Heart of the Swarm
Official Map Description
This maps has a short rush distance once the debris blocking the main ramps has been destroyed. You can play a defensive macro game while the debris remains or if you want to be aggressive, you destroy it and attack your opponent.
References
Blizzard Entertainment. StarCraft II. (Activision Blizzard) Map: Aftermath (in English). 2010.