So I’m a Spider?

There was an explosion in a school. You were one of the unfortunate souls caught in it. When next you open your eyes you find yourself contained in a very small space. It cracked, you discover it was an egg, you were hatched as a monster spider in a labyrinth. You can gain abilities from the creatures you eat. You’re not alone however, you have a voice in your head that calls itself Body Brain, or BB, that’ll help you to survive and escape the dungeon of monsters. You got to fight your way through the twenty levels to escape.