Level 9 Computing

Level 9 was a British developer of computer software, active between 1981 and 1991. Founded by Mike, Nicholas and Pete Austin, the company produced software for the BBC Micro, Nascom, ZX Spectrum, Commodore 64, Oric, Atari, Lynx 48k, RML 380Z, Amstrad CPC, MSX, Amiga, Apple II, Memotech MTX, and Enterprise platforms and is best known for its successful text adventure games until a general decline in the text adventure market forced their closure in June 1991.

Level 9's first release was an extension to Nascom BASIC called Extension Basic. The first game, also for the Nascom, was called Fantasy and was similar to Valhalla, but with no graphics. Other products from that era were Missile Defence, Bomber and Space Invasion — all for the Nascom. The tapes were duplicated and sent out by mail order by the brothers based on orders generated by the classified advertisements they ran in the Computing Today magazine. They were originally based in High Wycombe, Bucks before moving to the West Country.

Level 9 devised their own interpretation language, A-code, around 1979. It was very memory efficient, mainly due to the advanced text compression routines which could compress texts to about 50%. The game data, which were identical for all platforms, were incorporated into the executable file for specific machines, together with the interpreter part. A-code underwent a couple of revisions: there are three distinct versions in all, plus a couple of extensions which form new A-code versions of their own.

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