Steins;Gate: Open the Missing Link - Divide By Zero (Steins;Gate: Kyoukaimenjou no Missing Link - Divide By Zero)

Steins;Gate - OAV 23β - Open the Missing Link (FR)

Alternative version of episode 23 (23β) which leads into the story of Steins;Gate 0 - Traduction: Steins;Gate France (Youtube)