[@Raylah]
Yes, this is the case.  Genetically altered / organic or completely synthetic life living within artificial worlds.  

As for the tech level, it's pretty open here and up to you.  I expect it to very rather diverse due to each world being its own little world.

The worlds are by default self-repairing due to the custodians.  The custodians and their nature is up to you as well, as only the localized custodians survived the shattering to begin with.  It is assumed world maintenance is a common task for them even if how the custodians behave or how they interact with others is incredibly, incredibly varied.