Mecheon
Sacabambaspis
The vast majority of computer game adaptations only include what's in the basic stuff, and psionics is rarely in basic stuff. Hell, psionics has been modded into NWN and was modded into NWN 2 though I don't actually think anyone knows what happened to thatIt's notable that the vast majority of computer game adaptations also cut psionics (including the Eberron ones). The only ones I can think of that have it are the two Dark Sun games.
If we call "Outside of the scope of what the game includes" as "Cut", then we're going down a very interesting slope that's going to lead to someone saying that Greyhawk was cut because most games are FR based, or that leprechauns, pooka and Nagpa were cut from Shadows over Mysterea because, hey, they all had rules for playing them in Basic, right?