The phrase
"mysterious alien world" refers to a place or thing that is unknown, strange and difficult to understand.
Full definition
Upon waking up, your character realises that they're in
a mysterious alien world called Escario, also known as The City of Swords.
It's all about exploring, finding new abilities, and re-exploring in new ways, all across
a mysterious alien world.
After a lab accident, Trace awakens on
the mysterious alien world of Sudra.
Play as a scientist who died in an accident, and woke up in
a mysterious alien world.
A failed scientist dies in an accident, only to awaken in
a mysterious alien world.
You play as an AI Overseer sent from Earth entrusted with the future of humankind, and tasked with establishing a habitat that can sustain human life on
a mysterious alien world.