Introversion Software Limited is a British video game developer based in Walton-on-Thames, England. The company is most well-known for creating the top-down tycoon management simulation game Prison Architect, which was inspired by Dwarf Fortress and later inspired RimWorld.

History

The company was founded in 2001 by three friends: Chris Delay, Mark Morris, and Thomas Arundel. They met as undergraduates at Imperial College London. The company called itself "the last of the bedroom programmers" because the three friends initially worked from their homes. They moved to an office when creating their fourth game, Multiwinia. Their first released video game, Uplink, was mostly programmed and designed by Chris. Mark and Thomas handled marketing, materials, and other business tasks. A small initial investment allowed them to buy CD-Rs and printer cartridges. Early copies of the game were handmade. The company completely recovered their investment within a few hours of accepting orders. A large community formed, and the team added a new programmer, Andy Bainbridge, to work on two new games.

Darwinia was released and received much critical acclaim. It was later re-released via Steam on 14 December 2005. On 29 September 2006, Introversion Software launched its third game, DEFCON. Shortly after, the company measured their bandwidth in terabytes for the first time. After DEFCON's release, the team began work on a game called Subversion. However, their next game was Multiwinia, a multiplayer follow-up to Darwinia, which was released on 19 September 2008.

Darwinia and Multiwinia were adapted for the Xbox 360. This led to the

Financial history and independence

After a quiet launch, the game Uplink became both a critical and commercial success for Introversion. At E3 2002, the team spent £10,000 in a week on speedboats and fast cars, but later faced financial difficulties as their income dropped quickly. In the games industry, most of a game’s revenue is earned within the first six months. By December 2002, the publisher, Strategy First, stopped paying royalties for Uplink. They later filed a Consumer Proposal but were bought by Silverstar Holdings in early 2005. Even with money from direct sales, Introversion ran out of funds in mid-2003. The company nearly went bankrupt, selling most of their personal items as their second project, Darwinia, failed to generate enough money.

Darwinia was released in March 2005 but did not sell enough to keep the company afloat. Within six months, the developers relied on UK government benefits until November 2005, when they reached out to Valve to create a digital distribution deal on Steam. Valve agreed, and after an online launch on December 14, 2005, digital sales helped the company survive until the release of their third game, DEFCON.

On September 15, 2006, the day DEFCON pre-orders began, Introversion had only £1,500 left. However, the game sold better than expected, bringing in enough money to cover the next twelve months. The company credited Valve’s Steam platform for their financial recovery, with Tom Arundel stating, “Steam has made Introversion a commercial success.”

By early 2010, Introversion faced financial trouble again. After spending over a year adapting Darwinia+ for the Xbox 360, the game failed to attract players. Director Mark Morris said, “It just really bombed. We missed the entire audience.” The poor launch meant the company could not save itself financially. At this time, the company owed so much money that continuing operations risked criminal charges under UK insolvency laws. Tom Arundel believed they might face legal consequences and argued the company should stop operating immediately.

Introversion’s finances improved in Q3 2010 when Steam added achievements to DEFCON, leading to a sale that generated $250,000. This helped save the company. Later, in November 2011, Introversion’s games were included in the “Humble Introversion Bundle,” which sold 190,261 copies and earned $779,026.33. The company used this money to develop their next game, Prison Architect.

As of September 26, 2015, Prison Architect had earned over $19 million and sold more than 1.25 million copies. By August 2016, after releasing version 2.0, the game had reached 2 million players.

Their next game, Scanner Sombre, was released in April 2017 after nine months of development. It sold only 6,000 copies, and Chris Delay said it “bombed in a big way.” Virtual reality support was added later for the HTC Vive and Oculus Rift, marking Introversion’s first and only VR project to date.

In January 2019, Introversion and Paradox Interactive announced that the Prison Architect intellectual property was sold to Paradox, allowing Introversion to focus on new projects while Paradox continued to develop the game.

On May 28, 2022, Introversion announced their new science fiction game, The Last Starship, which entered early access on February 15, 2023. The game left early access on February 3, 2026.

Games

• Uplink (2001)
• Darwinia (2005)
• DEFCON (2006)
• Multiwinia (2008)
• Darwinia+ (2010)
• Prison Architect (2015)
• Scanner Sombre (2017)
• The Last Starship (2026)

• Subversion (cancelled)
• Chronometer (planned but not made)
• Wrong Wire (cancelled)
• Order of Magnitude (cancelled)
• Spacebots (cancelled)
• Megaprocessor (cancelled)
• Voxel Factory (cancelled)
• Nanotech (cancelled)
• Deep Space Industrial (cancelled)
• Praxis (cancelled)