Starting yesterday and running until June 4, players of the free-to-play MMO Elsword have a new challenge at their disposal: The "Gate of Darkness" update lets you jump in at select times to run a 15-wave gauntlet of demons, with friends or alone, with Three-Headed Dark Bone Dragon presenting the ultimate challenge at the end of the event.

Rewards increase depending on your difficulty, and include an in-game world buff (if a specific number of El Crystals are protected), special event cubes that contain Magic Stones and El Shards, and  a special cube of the wyvern's accessories (which are eligible to become permanent through crafting) for any player who logs in during the event period.

Elsword is a free-to-play PC MMO where players can team up or fight solo through vibrant 2D environments. Check it out, maybe slay a dragon or two, and let us know what you think in the comments or on Twitter.