The massively multiplayer online games EVE Online and DUST 514 have gone offline amid a large denial of service attack.
The popular PC and Playstation 3 first person shooter titles were affected after the DDoS hit its 'Tranquility' server cluster used by both games.
Developer Crowd Control Productions noticed the "significant and sustained DDoS attack" against the cluster and web servers Sunday morning and has since pulled the services offline.
"Our policy in such cases is to mobilise a taskforce of internal and external experts to evaluate the situation," the developers wrote on their Facebook account.
"... that group concluded that our best course of action was to go completely offline while we put in place mitigation plans.
"We will update you more frequently via our Twitter feed, however, an extended service interruption of several hours is expected as this process should not be rushed."
DUST 514 launched for Playstation last month.