HNM

• Extension: hnm
• Company: CRYO Interactive Entertainment

HNM is a multimedia format used in some computer games by CRYO.

There are at least three versions of the HNM format: HNM, HNM4 and HNM6.

HNM and HNM4 format animations are used in games like Commander Blood and Lost Eden. One of the differences is that HNM4 animations don't seem to contain an audio track, while the HNM ones do contain uncompressed PCM audio data. Both HNM and HNM4 are palette-based formats.

HNM6 is used by newer Cryo games made in the late 1990ies, e.g. China: The Forbidden City and probably the Atlantis games. The audio format in these animations is similar to Cryo's Apc audio format.

This forum discusses the coding algorithms used in the format: http://dune2k.com/forum/index.php?topic=18539.90

Games Using HNM

• China: The Forbidden City
• Commander Blood
• Frank Herbert's Dune
• Lost Eden
• Persian Wars
• Riverworld