EA has slammed its digital rights management in PC real-time strategy game Command & Conquer 4: Tiberian Twilight.

C&C4's DRM works similarly to Ubisoft's much-derided always-online system, where the game only works when connected to the internet.

If your connection drops for whatever reason, the game forces you back into the main menu and you lose your progress, even when playing the campaign single-player.

That's exactly what happened to EA.com editor Jeff Green, who hopped on to Twitter to vent his fury.

"Booted twice - and progress lost - on my single-player C&C4 game because my DSL connection blinked. DRM fail. We need new solutions," he said.

He then followed that up with another Tweet: "I've tried to be open-minded. But my 'net connection is finicky - and the constant disruption of my C&C4 SP game makes this unplayable."

Recent efforts to protect games from piracy have led to spiralling internet threads full of angry posts from PC gamers.

Earlier this month Ubisoft claimed that downtime of its DRM servers was caused by an attack, making it difficult for gamers to play both Assassin's Creed II and Silent Hunter 5 on PC.