Ports and Expanded Editions
| Platform | Media | Release date |
|---|---|---|
| NEC PC-8801 | 5¼-inch DD floppy disk | February 1983 |
| Sharp MZ-2000 | Cassette tape | 1983 |
| Fujitsu FM-7 | 3.5-inch floppy disk | 1983 |
| NEC PC-6001 | Cassette tape | 1984 |
| Fujitsu FM-77 | 3.5-inch floppy disk | 1984 |
| MSX computers | Cartridge | 1984 |
| Famicom | Cartridge | July 18, 1985 |
| NTT DoCoMo FOMA 505i and 900i series of mobile phones | Paid download | March 1, 2004 |
An expanded version of the game, branded Door Door mkII, was released three years after the original in February 1985. The game was ported to MSX computers, NEC's PC-6001, PC-6001mkII, PC-6601, PC-8801, PC-8801mkII, and PC-8801mkIISR models, Sharp's MZ-2000, and Fujitsu's FM-7. It features 100 levels and the option to start the game from the new set of levels (beginning with level 51). Encouraged by the rapidly increasing popularity of video game consoles in Japan, Enix also ported Door Door to Nintendo's Famicom. In March 2004, Chunsoft celebrated their 20th anniversary by releasing a version of Door Door for Japanese mobile phone networks. A faithful reproduction of the Famicom version, the application is available for the NTT DoCoMo FOMA 505i and 900i series phones, and can be downloaded from i-chunsoft for ¥300 per month. To the right is a table of all licensed ports of Door Door.
Not all ports of the game are perfect reproductions across the board. Few of the ports reproduce the original version's color scheme exactly; often the types of aliens sport different colors, and in the PC-6001 version of Door Door the background color is blue instead of black. Other versions, such as those released for MSX computers, suffer from a slower framerate due to hardware limitations. Fujitsu's FM-7 port doesn't support the game's native sound format and is plagued by inferior sound quality. The gameplay is limited by the computer's memory capacity; as a result, older computer models (such as NEC's PC-6001) featured only 40 levels in comparison to the Famicom's 50 and the PC-8801's 100. The Famicom port is the only version to feature a competitive two-player mode.
Read more about this topic: Door Door
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