IO Interactive
Masters of stealth
Danish studio IO Interactive created the Hitman series, defining the stealth sandbox genre with meticulous level design and dark humour.
IO Interactive built their reputation on assassination. The Hitman series, beginning in 2000, established IO as masters of the stealth sandbox—games where elaborate levels become playgrounds for creative problem-solving. After years under Eidos and Square Enix, IO achieved independence and continues developing the franchise they made famous.
Fast facts
- Founded: 1998 in Copenhagen, Denmark.
- Debut title: Hitman: Codename 47 (2000).
- Publishers: Eidos (2000-2009), Square Enix (2009-2017), independent (2017-present).
- Main franchise: Hitman series (eight mainline entries).
- Other titles: Kane & Lynch, Mini Ninjas, Freedom Fighters.
The Hitman formula
What makes the series distinctive:
- Sandbox levels: multiple approaches to every target.
- Disguises: blending in through costume changes.
- Environmental kills: creative assassination methods.
- Replayability: designed for repeated playthroughs.
- Dark humour: absurdist undertones beneath serious presentation.
Independence
IO’s journey to freedom:
- Square Enix ownership: 2009-2017.
- Management buyout: 2017, retaining Hitman rights.
- World of Assassination: episodic trilogy (2016-2021).
- New projects: including James Bond game.