AustLit

'Keagan finds a key . . .
It opens a doorway . . .
He steps through . . .

'Into a weird world of clones who are obsessed with perfection. But this world isn’t as perfect as it seems. Keagan is determined to return home – all he has to do is find a way out of the city, survive the Dumping Ground and outsmart a bunch of rogue clones!

'Will Keagan escape Perfect World?'(Publication summary)

'Xandra finds a key . . .
It opens a doorway . . .
She and her brother are sucked through . . .

'Into a crazy world that looks like steampunk London. Except in this world there are no humans – only animals. Xandra and Lex encounter rhino police, armadillo housekeeping staff, rodent inventors and even a lion on the throne. Here humans are the endangered species!

'Will Xandra and Lex survive Beast World?' (Publication summary)

'Find the key! Open the doorway! Enter the other world! 
Hall finds a key . . .
It opens a doorway . . .
He is transported . . .

'Into a strange virtual reality – part of a game world where humans are battling computers for survival! In this world, human imagination is everything and can even save your life. Hall must use all his game-geek knowledge to tell reality from virtual reality and find a way home.

'Will Hall play his way out of Game World?' (Publication summary)

'Newt and Rowan find a key . . .
It opens a doorway . . .
They dive through . . .

'Into a scary world ravaged by the Darkness. Buildings are just piles of rubble and among the debris are zombie-like humans! Newt and Rowan are desperate to escape, until they stumble upon something much more sinister. There is evil in this world – and it won't stop until everything has been destroyed. 
'Will Newt and Rowan stop the evil in Dark World?' (Publication summary)