REA case studies.

Game reconstruction and Electron analysis, with examples from DX-Ball, Notion and TH04.

Native · Reconstruction

DX-Ball's sound-pan calculation

Recover a sound-pan calculation from a 1996 Windows game. REA's instructions, caller references and numeric constants lead to a small C function, checked against the original behavior and all 63 compiled bytes.

Executable REA findings Recovered C Validation

Read the DX-Ball case study

Electron · Feature tracing

How Notion copies text and HTML

Trace a page-facing API through Notion's packaged JavaScript. Follow its IPC wrappers to the system clipboard, then see how a small HTML marker keeps rich block data connected to a copy.

Packaged app Exposed API IPC wrappers Clipboard

Read the Notion case study

PC-98 DOS · Reconstruction

How TH04 aims a ring of bullets

Inspect the original 16-bit angle helper with REA. Match its multiply, divide and coordinate operations to readable C++, then see how they produce a ring aimed at the player.

Original DOS code REA instructions Angle calculation Bullet ring

Read the TH04 case study

Step-by-step guides

The guides walk through a native calculation, an Electron export and a browser request. Each starts with a prompt and a concrete target.

Read the guides