本片是一部德国纪录片片，由哈伦·法罗基导演，由主演。
剧情简介：In this fourth of a four part series, media artist Harun Farocki explores the interplay between modern warfare and electronic media using computer simulation and documentary footage. Originally presented as a simultaneous four-screen gallery video installation, the separate films are available exclusively on realeyz.tv.
Director's Notes to part IV:
“This chapter considers the high degree of similarity between the images used in briefing for war and those used in debriefing once it’s over. There is one difference, however: the program for recalling traumatic experiences is slightly cheaper. Here, nothing and nobody casts a shadow.”
(Harun Farocki)
外文名：Ernste Spiele IV: Eine Sonne ohne Schatten
别名：Serious Games 4: A Sun with No Shadow
类型：纪录片 / 短片
地区：德国
导演：哈伦·法罗基
编剧：哈伦·法罗基 / Matthias Rajmann
