http://tags.library.upenn.edu/tag/simulators PennTags Feed http://tags.library.upenn.edu/makerecord/url/935 http://tags.library.upenn.edu/makerecord/url/935 Describes the product, <em>Marine Doom</em>, a video game-like military simulator that was adapted from the popular video game, Doom II.&nbsp; This simulator &quot;teaches concepts such as mutual fire team support, protection of the automatic rifleman, proper sequencing of an attack, ammunition discipline and succession of command.&quot;