Apparently, many years ago, Valve’s founder visited Japan and met with Nintendo about a joint venture “that ended up not happening.” Grey also said he played Super Mario Galaxy with Shigeru Miyamoto.
Grey stated:
“… my dad was talking to him (either late Nintendo president Satoru Iwata or Miyamoto) about some joint project. I think it was about the original Wii that ended up not happening. This was like probably seven years ago. It was super casual.”
Gabe