Emulators, cores, and the architecture behind preserving and playing classic games today.
A complete walkthrough keeping save files and save states in sync across a desktop, a handheld, and a laptop, so progress made on one device is exactly where you expect it on the next.
A complete walkthrough taking a messy folder of ROM files and turning it into a properly named, verified, artwork-complete collection that frontends like RetroArch and EmulationStation can actually use well.
A complete walkthrough setting up RetroArch's rewind feature — instantly reversing gameplay frame by frame — plus the memory and performance tradeoffs involved in tuning it well.
A complete walkthrough getting 3-4+ player retro games working locally — configuring virtual multi-taps, assigning controllers to the right ports, and handling per-core multiplayer quirks.
A console emulator refuses to boot anything, citing a missing or invalid BIOS file. Here's what these files actually are, why an emulator needs them at all, and how to fix a checksum mismatch.
Your character walks by itself with the stick untouched, or a full push barely registers. This is distinct from a controller not being detected at all — it's a calibration problem, and it's fixable in software.
A frame-perfect run suddenly hitches every time a new visual effect appears on screen. It's not a savestate or performance problem — it's your GPU driver compiling a shader for the first time, mid-frame.
Dolphin was days from launching on Steam when Nintendo sent Valve a DMCA cease-and-desist. Valve pulled the listing rather than take a side — and Dolphin's Steam release has been in limbo ever since.
A complete walkthrough hosting and joining a RetroArch netplay session, including the core-matching requirement that causes most first-time connection failures.
Nintendo sued Yuzu developer Tropic Haze in February 2024 alleging the Switch emulator existed to facilitate piracy at scale. Within days, Yuzu was gone — and its sister project Citra went down with it.