Programs specialising in compressing or decompressing certain aspects of roms, allowing them to become editable.

Currently in this catagory (2):

The Sega Data Compressor (TSDC) MD Programs Pack

A compilation of all known compression programs into one handy windows based shell, including embedded offsets of compressed art known at the time - most definately essential for anyone willing to take their hacks one step further and completely redesign the way the game looks. Download now.

Essential

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Filesize: 229KB

Authors Site: David 'Magus' Declerck

A pack of command line based compression and decompression programs for the megadrive. Although helpful, not particularly user friendly as there is little documentation. The inclusion of the Nemesis Art Format searching utility that scans roms for any nemesis compressed art is, however, very handy.

Decent

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Filesize: 208KB

Authors Site: Nemesis' hacking