A series of distributed denial-of-service (DDoS) attacks have targeted several popular online games including MMOs RuneScape and Eve Online, according to this Develop report. These attacks have (naturally) caused sporadic outages and limited players' ability to log into these games.
"As you may be aware, we're currently experiencing service disruption across both game and web services, this is affecting both RuneScape and Old School RuneScape," Jagex wrote in a forum post. "We are aware that RuneScape (as well as other games) are being targeted by attacks which are causing connectivity issues for our players."
"We are doing everything we can to mitigate any impact on your gameplay experience – our Systems Team are currently working to improve stability across our core hosting platform to improve the situation."
RuneScape developer Jagex is warning its community to avoid engaging in what it calls "dangerous/high-risk content such as PvP or high level PvM." It also said that the attacks have caused server disruptions across both its game and associated web services.
Eve Online developer CCP has also said that its Tranquility server has been the target of a number of DDoS attacks, though connectivity has now been restored as of this writing.
Other games that are also reportedly under attack include League of Legends and Guild Wars 2.
Who is perpetrating these attacks is unknown as of this writing but we'll update our story when we have more information.