Free-to-play shooter Battlefield Heroes has turned three, and to celebrate EA has released a new map.

Called Fortress Frenzy,  the map is set on a small island. It introduces Treasure Chests, which give players special random rewards for killing an enemy. If you log-in between now and Sunday, July 1, you will receive two free party packs. One pack is called Royal, the other National, both include a Birthday Shirt, a Tricycle Emote, and a Treasure Chest Key.

To access your items log-in, head to the My Stuff menu, and select Rewards.