For future reference:
3.8mm bits will open NES, SNES, N64, GB games. For some early NES games, a small flathead screwdriver is all that is needed.
4.5mm bits will open SNES, N64, GC, TG16 consoles, and some Genesis games.
The tri-wing opens various Game Boy and DS systems and GBA games.
I'm sure I missed a few, but it's a good start.