Many games runs on me,
yet I'm found in a game.
To the game's family,
I lend also my name.
So go run and climb,
and jump with abandon,
but remember that I'm
the thing that you stand on.
Please tell me what I am, and explain why.
Platform is a word for the system a game runs on - PC, Wii, XBox, Playstation, etc.
Platforms are also common in games like Mario and Metroid.
Those games are called platformers.