This is Pangea Software's Nanosaur updated to run on modern systems. Originally released in 1998 as a Mac-only game, Nanosaur casts a cybernetic dinosaur from the future who's sent back in time 20 minutes before a giant asteroid hits the Earth.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.