Titles by John Heffernan marked with tag: young-adult time-travel
- 2012 - History Hackers
- 2012 - Time Thieves
- 2011 - Black Prince
- 2011 - Samurai Secrets
- 2011 - Sky Wars
- 2011 - Super Soldier
- 2011 - Underwater War
- 2010 - Aztec Attack
- 2010 - Battle Bust-Up
- 2010 - Caveman Bash
- 2010 - Chariot Charge
- 2010 - Vampire Virus
- 2010 - White War
- 2009 - Bloodaxe
- 2009 - Destroy Troy
- 2009 - Open Fire
- 2009 - Red Devil Down