On: Super Mario 64 has been decompiled

[bni]

There has been similar things done in the past, for example for Dune Legacy (Dune II) or REminiscence (Flashback)

Mario 64 is more recent so might be a magnitude more complex.

There are also other approaches, like a total re-implementation, not a decompile/re-source. ScummVM engine for Blade Runner, the adventure game from 90's is a recent very impressive example of that

[undershirt → bni]

I can’t believe ScummVM has re-implemented 72 classic game engines[1] from scratch. They also document their basic revere-engineering strategies[2].

[1] https://github.com/scummvm/scummvm/tree/master/engines

[2] https://wiki.scummvm.org/index.php?title=HOWTO-Reverse_Engin...