In the BUTTON choice, the guards are going to the cafeteria for lunch. However, it's nighttime.
The game was originally going to be set in a jungle, but Marcus Bromander felt like he didn't want to draw so many trees. (Source: Marcus' twitter).
It is found out that no one that works in the complex cares about people that are dead or people that are sick. Example:
Play Dead: Henry pretends to have died in the transfer cell and Gregory falls for it. Unfortunately, all dead inmates are tossed into the ocean. Henry technically escaped when thrown since the ocean is outside The Wall.
Fake illness: Henry coughs to get the guards attention, and is promptly tranquilized and sent to a quarantine cell with other sick inmates.
The fifth game in the "Henry Stickmin" series.