Fire Emblem Warriors is a crossover with Koei Tecmo’s Warriors franchise. More specifically, its combat and large-scale battlefield structure draw heavily from the Dynasty Warriors line, while Fire Emblem supplies the characters, weapon triangle, classes, relationship systems, and tactical flavor.
The 2017 game was developed by Omega Force and Team Ninja, studios within Koei Tecmo associated with the Warriors style. Instead of turn-based grid combat, players directly control heroes who fight through crowds of enemies using combos, special attacks, objectives, and commands issued to allied units.
The game combines original protagonists Rowan and Lianna with characters from Fire Emblem: Awakening, Fire Emblem Fates, and New Mystery of the Emblem. Additional characters arrived through downloadable content, including figures from Shadow Dragon, Awakening, and Fates.
A common mix-up is to answer Dynasty Warriors when the question asks for the franchise name. Dynasty Warriors is the best-known specific series behind the format, but Warriors is the broader Koei Tecmo franchise label used for the crossover.