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→External Links
==External Links==
* [http://www.mobygames.com/game/ti-994a/defender Moby Games: Defender]
* [http://www.ti99ers.org/timeline/cartbytitle.html TI-99ers On-line User Group: TI-99 Cartridge Listing]
* [https://www.videogamehouse.net/defender.html TI-99/4A Video Game House: Defender]]
* [https://en.wikipedia.org/wiki/Defender_(1981_video_game) WikiPedia: Defender (1981 video game)]
