I never heard about this movie and think that it looks interesting. If I understand correctly, it was released in theaters last year (in Spain, at least).
A vertical prison with one cell per level. Two people per cell. One only food platform and two minutes per day to feed from up to down. An endless nightmare trapped in The Pit. Directed by Galder Gaztelu-Urrutia, The Platform is a twisted social allegory about mankind at its darkest and hungriest.