free-roaming

While Metroid introduced multiple endings to a linear game, other more recent designs have presented free-roaming worlds incorporating multiple gameplay paths.

From the distance of today, my guess is that it was the free-roaming horses that had most to do with the increase in carnivores, mainly because nobody was trying to protect them.

Microlensed double-image quasars have sent a consistent message that the baryonic dark matter consists of a dark population of free-roaming planet mass objects.