Turrican is a 1990 video game programmed and designed by Manfred Trenz.
 It was first developed for the Commodore 64 by Rainbow Arts, but was ported to other systems later.
 In addition to concept design and character creation, Trenz personally programmed "Turrican" on the Commodore 64.
 A sequel, "", followed 1991 for the Commodore 64 and other platforms.
The Commodore 64, also known as the C64 or occasionally CBM 64 or VIC-64 in Sweden, is an 8-bit home computer introduced in January 1982 by Commodore International (first shown at the Consumer Electronics Show, in Las Vegas, January 7–10.
 1982).
 It is listed in the Guinness World Records as the highest-selling single computer model of all time, with independent estimates placing the number sold between 10 and 17 million units.
 Volume production started in early 1982, marketing in August for US$ .
 Preceded by the Commodore VIC-20 and Commodore PET, the C64 took its name from its 64 kilobytes (65,536 bytes) of RAM.
 It had superior sound and graphical specifications compared to other earlier systems such as the Apple II and Atari 800, with multi-color sprites and a more advanced sound processor.
Commodore 64 disk/tape emulation and data transfer comprises hardware and software for Commodore 64 disk & tape emulation and for data transfer between either Commodore 64 (C64), Commodore (1541) disk drive or Commodore (1530 Datasette) tape deck and newer computers.
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.
The Super Expander 64 was a cartridge-based extension to the built in BASIC V2 interpreter of the then immensely popular Commodore 64 home computer: Since the 64 was developed in a hurry, Commodore simply adapted the BASIC V2 from the PET line of computers and the VIC 20 for their new machine, with no support for the advanced sound and graphics capabilities of the 64.
 To make use of the advanced hardware, BASIC programmers needed to memorize hardware addresses and "POKE" commands directly to the memory-mapped devices.
 Later 8-bit systems from Commodore had BASIC interpreters enhanced to support the special hardware, and with the Super Expander 64 cartridge, Commodore 64 users could "retrofit" their machine with a BASIC to match the hardware capabilities.
Fiendish Freddy's Big Top O'Fun is a video game developed by Gray Matter under developer Chris Gray and published in 1990 by Mindscape.
 It originally appeared on the 16-bit Atari ST, IBM PC and Commodore Amiga, before later being converted to the ZX Spectrum, Commodore 64, Amstrad CPC.
 The Commodore 64 version was included on the bundled cartridge of the ill-fated Commodore 64 Games System.
The Memotech MTX500, MTX512 and RS128 were a series of Zilog Z80A processor-based home computers released by Memotech in 1983 and 1984.
 They were technically similar to MSX computers, but were not compatible.
Felix in the Factory is a platform game for home computers published by Micro Power (a.k.a. Program Power).
 The game was first released in 1982 for the BBC Micro.
 It was ported to the Acorn Electron (1983), Commodore 64 (1984) and Memotech MTX (1984).
 It is the first in a trilogy of Micro Power games featuring the factory worker Felix and was followed by "Felix and the Fruit Monsters" (a Pac-Man style overhead maze game) and another factory-based platformer, "Felix meets the Evil Weevils".
DK'Tronics Ltd (stylised as dk'tronics) was a British software and hardware company active during the 1980s.
 It primarily made peripherals for the ZX Spectrum and Amstrad CPC but also released video games for the Spectrum, Commodore 64, Commodore Vic 20, BBC Micro, Memotech, MSX and Amstrad platforms.
CCS64 is a shareware Commodore 64 emulator developed by Per Håkan Sundell of Sweden.
 It is an accurate and very popular Commodore 64 emulator, which can play Commodore 64 formatted cartridges, demos, games, and music, in Windows, and it has many modern software features.

Question: What are both Commodore 64 and Memotech MTX?
Answer: computer