Indeprox announced a flash OVA "Spelunker-sensei". It's based on a parody four-frame manga related to a classic video game "Spelunker" (1983). Spelunker game was introduced on NES by IREM and the extremely vulnerable character has gained long lasting popularity among the game fans. “Spelunker-sensei” has been serialized in IREM website for more than ten years. The 30min long OVA will be released on March 16th 2011.