skullgiver , 4 days ago

Modern decompilers like the one packaged with Ghidra helps a lot for intuiting how instructions work. Unfortunately, a lot of video game code is obfuscated, so you’re probably more likely to run into weird instructions, but OK the other hand you’ll learn what they do faster than when you rarely encounter them.

If you want to write amd64 code, you can get away with mastering just one instruction, and that’s the kind of tomfoolery that obfuscated programs will try to use to make your life harder.