Definitely not. I'm reverse-engineering Tenchu: Stealth Assassins and the original Japanese release's game code is written entirely in C as far as I can tell.

Definitely not. I'm reverse-engineering Tenchu: Stealth Assassins and the original Japanese release's game code is written entirely in C as far as I can tell. It does use the Psy-Q SDK which contains assembly, but it's not something that the game developers have written.