The House of the Dead Series: 7 Main Games + Numerous Spin-Offs

Main Series (Arcade / Console)

1. The House of the Dead (1996 Arcade, 1998 Saturn/PC)
2. The House of the Dead 2 (1998 Arcade, 1999 DC/PC)
3. The House of the Dead III (2002 Arcade, 2003 Xbox/PC)
4. The House of the Dead 4 (2005 Arcade, 2007 PS3/PC)
5. The House of the Dead: Overkill (2009 Wii, 2013 PS3/PC — grindhouse prequel)
6. The House of the Dead: Scarlet Dawn (2018 Arcade, 2020 Switch/PC — Unreal Engine 4)
7. The House of the Dead: Remake (2022 Switch/PC/PS4/Xbox — Mega Pixel Studio remake of 1)

Notable Spin-Offs / Variants

• The House of the Dead: Dead Alive (1999, PC light-gun)
• The House of the Dead II: Special Edition (2000, Arcade)
• The House of the Dead 4 Special (2005, Arcade — motion seat)
• The House of the Dead: Outbreak / Outbreak File #2 (2004/05, Arcade — co-op focus)
• The House of the Dead: Silent Night (2005, Arcade — holiday)
• The House of the Dead: Last Stand (2006, Arcade)
• The House of the Dead: Lost in Time / Retribution (2011, Mobile)
• The House of the Dead: Blackwater Creek (2014, Mobile)
• English of the Dead (2008, DS — typing tutor spin-off)
• Zombie Revenge (1999, Arcade/DC — beat 'em up in same universe)

Total distinct releases: ~17+. The 7 main entries define the canon rail-shooter lineage.