Ninja Gaiden 4, developed by Team Ninja, offers a story mode lasting 15–20 hours on Normal difficulty. Director Masazaku Hirayama stated this as the average playtime.
Game Modes and Challenges
Completionists will find additional content beyond the story mode. After the first playthrough, players unlock Master Ninja difficulty, which extends the playtime. Additional modes include challenge missions, chapter challenges, and Purgatory trials, similar to previous Tests of Valor. These elements increase the game's longevity.
Hero difficulty is suitable for beginners and includes support features, easing the entry into the game. Meanwhile, the Hard and Master Ninja difficulties are designed for seasoned players seeking more challenge.
Release and Expectations
- Ninja Gaiden 4 released on 2025-10-20.
 - Story mode averages 15–20 hours on Normal.
 - Completionists have access to extended content post-game.
 - Master Ninja difficulty unlocks after an initial playthrough.
 - Purgatory trials offers players Tests of Valor-like challenges.
 
The variety of gameplay options and challenges are designed to engage players long after the first run, catering to both newcomers and veterans of the series.