This is version 0.3 of xemeraldia. Drop the blocks. If you drop a square on top of one of the same color, they (as well as any neighboring blocks of the same color) will both be shaken by an "impact". The first impact will cause fractures; the second will cause the block(s) to dissolve. You can either use the arrow keys or vi-style (hjkl) keys to move/ rotate the blocks. `s' or `p' will pause the game, and if your boss comes along, `q' can be used to avoid an unpleasant confrontation.
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.