"Starship Troopers" had a direct influence on many later science fiction stories. John Steakley's 1984 novel "Armor" was, according to the author, born out of frustration with the small amount of actual combat in "Starship Troopers" and because he wanted this aspect developed further. The 1988 Gainax OVA series "Gunbuster" has plot elements similar to Heinlein's novel, depicting humanity arrayed against an alien military. Scholars have identified elements of Heinlein's influence in "Ender's Game", by Orson Scott Card, as well. Hantke, in particular, compares the battle room in "Ender's Game" to Heinlein's prosthetic suits, stating that they both regulate but also enhance human agency. Suvin suggests parallels between the plots of the two novels, with human society in both stories at war against insect-like aliens, but states that the story of Ender Wiggin takes a very different direction, as Ender regrets his genocidal actions and dedicates his efforts to protecting his erstwhile targets.