Nintendo uses a proprietary 6-character Title ID system for Wii discs. The breakdown of RMHE08 is as follows:
: For specific item drop rates and monster weaknesses, the Monster Hunter Wiki Monster Hunter Tri -RMHE08- WBFS
RMHE08 specifically identifies the North American release. Other regions have different IDs (e.g., RMHP08 for PAL/Europe). Nintendo uses a proprietary 6-character Title ID system