I love the survival genre, whether it's apocalyptic or isolated disasters... or survival in post-apocalyptic environment.
Everyone already mentioned most of them, so there's little I can think of... but still, you can try:
Metro survive - Disaster survival.
Drifting Classroom - It's hard to describe, but you'll enjoy this if you liked Dragon Head.
7 Seeds - Post-Apocalyptic survival, but it jumps between past and present giving insight into both sides of the disaster.
King of Thorn - Sorta like Cage of Eden but much darker, wake up in bizarre post-apocalyptic future and try to survive it.
Parasyte - Not really about survival from immediate danger, but it has the whole alien parasyte comes to earth and the world has to deal with it like Alive. It's also incredibly good.