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NeoLemmix
NeoLemmix
Level Packs
Official Lemmings Games
NeoLemmix Editor
Flexi Toolkit
Format Information

Lemmings Plus
Lemmings Plus I
Lemmings Plus II
Lemmings Plus III
Lemmings Plus IV
Lemmings Plus V
Lemmings Plus Omega
Holiday Lemmings Plus
Lemmings Plus Flashbacks
Lemmings Plus Flashbacks II

LP Packs Comparison

My Other Levels
Doomsday Lemmings
NeoLemmix Introduction Pack

Lemmix (Traditional)
CustLemmix
Flexi Lemmix
Lemmix Players


Tools
Tools List
NeoLemmix Graphic Set Tool

Obsolete
LemMain
LemSet
NeoLemEdit
NeoLemmix DAT Compression

The DAT compression in NeoLemmix is almost completely identical to that of standard Lemmings, which has been documented here by ccexplore. The only difference is the header of each section:

Byte Value
0x00 Number of bits in first byte. This is identical to the standard format
0x01Checksum. This is identical to the standard format
0x02
0x03
0x04
0x05
Decompressed data size. Unlike the standard format, this value is 4 bytes; it's still big-endian.
0x06
0x07
0x08
0x09
Compressed data size. Unlike the standard format, this value is 4 bytes; it's still big-endian.