"dead flesh" feel. There were disk drive interfaces, such as the Abbeydale Designers/Watford Electronics SPDOS, Abbeydale Designers/Kempston KDOS and Opus Discovery. The SPDOS and KDOS interfaces were the first to come bundled with office productivity software (Tasword Word Processor, Masterfile database and Omnicalc spreadsheet). This bundle, together with OCP's Stock Control, Finance and Payroll systems, introduced small businesses to a streamlined, computerised operation. The most popular floppy disk systems (except in East Europe) were the DISCiPLE and +D systems released by Miles Gordon Technology in 1987 and 1988 respectively. Both systems had the ability to store memory images onto disk snapshots could later be used to restore the Spectrum to its exact previous state. They were both compatible with the Microdrive command syntax, which made porting existing software much simpler. During the mid-1980s, Telemap Group Ltd launched a fee-based service allowing users to connect their ZX Spectrums via a Prism Micro Products VTX5000 modem to a viewdata service known as Micronet 800, hosted by Prestel, which provided news and information about microcomputers. The service allowed a form of instant messaging and online shopping. Software While games comprised the majority of commercial ZX Spectrum software, there were also programming language implementations, databases (e.g. VU-File), word processors (e.g. Tasword II), spreadsheets (e.g. VU-Calc), drawing and painting tools (e.g. OCP Art Studio), and even 3D-modelling (e.g. VU-3D) and archaeology software. The early Spectrum models' great success as a games platform came in spite of its lack of built-in joystick ports, primitive sound generation, and colour support that was optimised for text display: the hardware limitations of the platform required a particular level of creativity from video game designers. From August 1982, the ZX Spectrum came bundled with a software starter pack in the form of a cassette tape entitled Horizons: Software Starter Pack, which included 8 programs: Thro' the Wall (a Breakout clone), Bubblesort, Evolution (an ecosystem of foxes and rabbits), Life (an implementation of Conway's Game of Life), Draw (a basic object-based drawing utility), Monte Carlo (a simulation of the rolling of two dice), Character Generator (for editing user defined graphics), Beating of Waves (plots the sum of two sine waves). According to the 90th issue of the British gaming magazine GamesMaster, the ten best games released were (in descending order) Head Over Heels, Jet Set Willy, Skool Daze, Renegade, R-Type, Knight Lore, Dizzy, The Hobbit, The Way of the Exploding Fist,