Superhero mashup Marvel Ultimate Alliance and its sequel have vanished from the PlayStation Store, Steam, and Xbox Store.
Both games were spruced up for current-generation systems two years ago, although they've now been delisted (as predicted correctly by this Resetera post) due to Activision's licence having expired.
Marvel Ultimate Alliance was developed by Raven Software and originally launched in October 2006 for Gameboy Advance, PlayStation 2, PC, Xbox, and Xbox 360. Marvel Ultimate Alliance 2 arrived three years later with Vicarious Visions at the helm.
As the name implies, the games feature a massive roster of Marvel heroes and villains, with the likes of Black Panther, Blade, Ghost Rider, Spider-Man, and Wolverine clashing with Doctor Doom, Magneto, Sabretooth, Venom, and more.
It's a pity the games have been removed, although if it makes you feel any better you can simply blame the whole thing on Thanos getting click-happy with his fingers.