Acornsoft was the software arm of Acorn Computers, and a major publisher of software for the BBC Micro and Acorn Electron. As well as games, it also produced a large number of educational titles, extra computer languages and business and utility packages – these included word processor VIEW and the spreadsheet ViewSheet supplied on ROM and cartridge for the BBC Micro/Acorn Electron and included as standard in the BBC Master and Acorn Business Computer.

Acornsoft was formed in late 1980 by Acorn Computers directors Hermann Hauser and Chris Curry, and David Johnson-Davies, author of the first game for a UK personal computer and of the official Acorn Atom manual "Atomic Theory and Practice". David Johnson-Davies was managing director and in early 1981 was joined by Tim Dobson, Programmer and Chris Jordan, Publications Editor.

While some of their games were clones or remakes of popular arcade games (e.g. Hopper is a clone of Sega's Frogger, Snapper is Namco's Pac-Man, Arcadians is Namco's Galaxian), they also published a number of original titles such as Aviator, Elite, and Revs. Acornsoft also published text adventures by authors such as Peter Killworth, including Philosopher's Quest (previously titled Brand X) and Countdown to Doom.^{[citation needed]}

As a result of the publication of a method to circumvent copy protection measures employed by Acornsoft titles, a High Court injunction against Computing Publications - publisher of Personal Computer World - was granted to Acorn Computers "requiring all copies of the January 1984 issue of PCW to be withdrawn from sale", with the article concerned being regarded as inciting readers to "duplicate computer programs". This injunction was subsequently lifted as a consequence of an out-of-court settlement between the parties involving a damages payment of £65,000 plus costs to Acorn "to meet Acorn's expenses in developing a new locking device". The article's author, Guy Kewney, and the magazine's editor, Jane Bird, argued that printing a software routine showing how to save Acornsoft cassette software to disk was a service to the magazine's readers. The cost of printing the magazine issue concerned was estimated at £100,000.

Acornsoft became a subsidiary within Acorn Computer Group, distinct from Acorn Computers who were responsible for the development of Acorn's microcomputer systems, but Acornsoft ceased to operate as a separate company upon the departure of David Johnson-Davies in January 1986. Past this date, Acorn Computers used the Acornsoft name on office software it released in the VIEW family for the BBC Master series. In 1986 Superior Software was granted a licence to publish some Acornsoft games and re-released many, individually and as compilations such as the Play It Again Sam and Acornsoft Hits series. By agreement, the Acornsoft name was also used on the packaging of some of the subsequent Superior games. Superior chose not to take on Acornsoft's text adventure games, most of which were released in updated versions by Topologika along with some sequels from the same authors.

In 1997, Acorn sought to revive the Acornsoft brand for new software releases, such as upgrades to RISC OS, programming tools, a new Web browser, multitasking movie playback (using Acorn Replay), and Java for RISC OS. A stated objective was to demonstrate that a "wide range of innovative software at competitive prices" was available for RISC OS, with support also being potentially offered to third-party software producers. Acornsoft products themselves would be supported by marketing, including advertising, and the provision of press review samples.

Acornsoft titles extended their consistent branding to the software's loading screens.

Including all arcade, text adventure and board games. All games were compatible with the BBC Micro Model B. Games followed by Model A & B were compatible with both machines. Games followed by Electron were also released separately for the Acorn Electron. Games are listed by their catalogue numbers which are roughly the order of release of the BBC versions.