I played Dungeons & Dragons with some friends a long time ago and remembered this creature. Also, it is a common enemy you fight in the computer game
Neverwinter Nights: Hordes of the Underdark. They are quite nasty adversaries, but look nothing like how the rakoshi are described in
The Tomb. They resemble a humanoid tiger in appearance.
I also found this on Wikipedia:
The rakshasa was one of the earliest creatures introduced in the D&D game.
Dungeons & Dragons (1974-1976)
The rakshasa first appeared in the official newsletter of
TSR Games,
The Strategic Review #5, December 1975.
The
rakshasa (demons of India) appeared in Supplement IV:
Gods, Demi-Gods & Heroes (1976).