Misshitsu no Sacrifice ~Jitka: Aru Heisa Shisetsu kara no Dasshutsu~

Jitka, one of the characters from D3 Publisher’s trap adventure game Misshitsu no Sacrifice, has awoken from a cold sleep and she’s trapped in an underground facility. In Misshitu no Sacrifice Jitka: Escape from a Locked Facility you have to help her get out.

[From Siliconera]

This spin off plays like a "locked room" style game, with a focus on ecchi unlike it's predecessor.