Classic sci-fi horror FPS Doom has been pulled from Xbox Live Arcade, as has Yukes' Double D Dodgeball.
Although the games were both pulled without any warning, a representative for Zenimax has confirmed that Doom was withdrawn due to the expiration of rights.
It said the game "should be back up soon from Bethesda".
There's no word yet on Double D Dodgeball - how will we go on without it?
Sega's Outrun Online Arcade was pulled from the PlayStation Network earlier this month for similar reasons, making the racer an Xbox 360 exclusive.