About
The Sentinel, released in the US as The Sentry, is a 1986 puzzle game by Geoff Crammond, published by Firebird for the BBC Micro and later converted to many other home computers; it was among the first games to use solid-filled 3D graphics and has appeared on several "best games of all time" lists. This repository is a fully documented, hand-reconstructed disassembly of the original BBC Micro source code for The Sentinel, annotated line-by-line as a companion to the thesentinel.bbcelite.com website. Building it from source reproduces a binary that matches the original released game exactly, verified via checksum comparison.
Getting started
The source can be built into a working game disc image using the provided Makefile (or batch file on Windows) together with the BeebAsm assembler and Python, producing a disc that can be run on original BBC Micro hardware or in an emulator.
Additional notes
- Licensing
- The repository carries no explicit license; the original game remains under its 1986 Firebird copyright, so only reading and forking are permitted, and the project could be taken down at the rights holders' request.