To look at and document the disassembled/pseudo-decompiled code of the game, you are best off using a Tool specifically made for Reverse-engineering, like one of the following:

• Ghidra
• IDA Pro
• Cutter

For this Article, Ghidra will be used, but you can use anything.

To import the code.bin into the program you are using, you are probably better off converting it to an ELF file to import it, since ELF is a more widely-supported format.

• Disable the “Non-Returning Functions - Discovered” option when importing, since it will only cause trouble by marking innocent functions as non-returning.