The Hundred Line: Last Defense Academy, a standout title from 2025, distinguishes itself from conventional strategy RPGs by integrating character sacrifice as a fundamental gameplay mechanic, a concept intentionally designed to contrast with titles like Fire Emblem. Developed by Too Kyo Games, the game challenges players' ingrained notions of protecting party members at all costs.

Gameplay director Akihiro Togawa explained in an interview with Automaton that the core idea of character sacrifice emerged after the game's narrative premise—teenagers defending a school as humanity's final hope—was established. With Kazutaka Kodaka of Danganronpa and Kotaro Uchikoshi of Zero Escape leading the project, the team aimed for a game that appealed to both visual novel fans and strategy RPG enthusiasts, while also thematically aligning with the narrative's emphasis on self-sacrifice.

The development team drew inspiration from the Japanese term "死守" (shishu), meaning "to protect with one's life." While the literal meaning suggests a resolve to die, The Hundred Line twists this by having characters who die in battle resurrected in the infirmary, only to be compelled to continue defending the academy. This mechanic creates a unique thrill, turning character death into a tool for progression rather than a failure state.

Battles in The Hundred Line are structured in waves, with teams revived between them. Crucially, players gain more actions per turn for each enemy defeated, and sacrificing a character can be a powerful strategic move. This "Last Resort" ability removes a character from the field in an all-out final stand, directly opposing the typical SRPG player's instinct to preserve their units. This design choice reinforces the narrative theme of students being viewed as expendable by their superiors. In contrast to Fire Emblem's permadeath modes that heighten the stakes of each hit, The Hundred Line treats death as a tactical option.

Togawa expressed satisfaction in observing players adapt to this system, noting that "Actually, it’s easier if I let this character die" becomes a realization for many. He was delighted to see players embrace sacrifice, turning their characters into strategic assets. The game largely eschews penalties for character sacrifice, a design choice that was deliberately maintained despite earlier considerations for a karma system that would have altered the narrative based on character deaths. The team decided against this to ensure player choices, rather than combat skill, remained the primary driver of the story, and to prevent accidental narrative branches for less experienced players.

The Hundred Line: Last Defense Academy is available on PC and Switch. Too Kyo Games is also collaborating with Spike Chunsoft on Danganronpa 2×2, a remake that will feature a new storyline alongside a modernized retelling of the original game.