A downloadable tool

This is my latest update for AGDX which is an enhanced version of Arcade Game Designer by Jonathan Cauldwell. Over 60 updates have been made to help productivity and ease of use. Manual is included. The most recent version is '4Ja'. Earlier version are included in the zip in case any new errors crop up.

The zip file includes the manual, some release notes, and TAP files of different versions to be run on a ZX Spectrum 128k or equivalent emulator.

Don't forget to read the release notes - AGDX Updates.txt

Original AGD written by Jonathan Cauldwell, all rights reserved.

AGDX is always available free of charge, but a lot of work went into it. If you appreciate my efforts, please consider buying one or more of my games to say thanks.


Install instructions

Unzip the file to access the TAP file and open in an emulator.


AGD4.7X4_beta.zip 466 kB


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Just Windows or possibility of Mac version in the future?

this is an older version which I will be updating soon. It runs on a Spectrum emulator so if you want to run it on a Mac, you can do so using emulation.

When will agdxplus be released?

difficult to say exactly. It's a hobby project so I only really work on it when i have time and feel the inspiration :)

(1 edit)

In versions 4.7X4I you can not edit sounds, the cursor don't appear.  My emulator is Fuse.

yes, it's in the notes. There wasn't enough room for sounds when I added the new memory options. However, you can edit sounds in an earlier version, and then import them as binary, the address for each sound is provided. Most people don't use sounds as they can be buggy.  Or you can use version 4H if you prefer.

I am importing as binary because version 4H crash with my game. It's weird. Thank you.

in general, people don't use AGD's sound effects code because it seems to be buggy. It's not a perfect system.  AGDX is mainly an improved editor, but if I find a way to fix a bug without causing incompatibility I try to do it. Good luck with your game!

What possibilities are there to collaborate in the sources of the Editor, which I believe can be improved. or is closed?
I think that some on-screen command aids would be very well received

In order to maintain compatibility with earlier versions of AGD, the memory has to be managed very carefully and the amount of space available for additions is quite small - unfortunately at this point the memory is almost completely full so there is very little space for adding  on screen help - there is however a manual available in both English and Spanish, and it's quite easy to have AGD open in an emulator window with a screen showing commands next to it.