This page details pre-release information and/or media for Life Force (NES).
Stage 5#

This image can be seen cropped in the Salamander manual and the back of the Life Force box in full, depicting an early version of the second half of the fifth stage. Differences include an inclined corridor, the bouncing ball enemy that was made blue and moved to much earlier on in the stage, and a scrapped brick background pattern.
SAMPLE Version#
A sample version of Salamander, released to Japanese store retailers as a demo and currently undumped, features a few differences from the final version.
Music#
There is a song hidden within the SAMPLE version that is unused in the demo itself, and is completely absent from the final version of the game. It is a straightforward arrangement of the song "Combat" from the arcade version of Life Force.