LICENCE
Everything here is public domain. Future Crew released the original Second Reality source and data under the Unlicense in 2013, and this port is released under the same terms. Take it, fork it, ship it, sell it — no attribution required, no conditions.
Third-party components keep their own permissive licences: libopenmpt (BSD-2-Clause), chiptune2/3.js (MIT). Photographs are credited beside each picture. Artwork is Future Crew’s own, from the release’s data files.
SOURCES
Primary the 1993 release itself — source, data and executables
History Wikipedia: Future Crew · Second Reality · Scream Tracker
S3M · Jonne Valtonen · Peter Hajba · Misko Iho · Remedy
Photos Wikimedia · sisu.vc · MikroBitti 10/1997 · Slush
Tuomi making-of · cubic.org/asm94 · Bitfellas · x.com/mtuomi
Further fabiensanglard.net/second_reality/
hackaday.com — “Under The Hood Of Second Reality”
pouet.net/prod.php?which=63