Ys IX: Monstrum Nox Balances Crime, Combat and Exploration Into One Sprawling Package

Ys IX: Monstrum Nox asks players to fight through a city filled with monsters while carrying out crimes. It works because it trusts players to enjoy both sides of that contradiction at once.

Trailer, via ファルコムチャンネル.

The City of Lost Memories

The setting is the prison city of Augustia, built around a tower that holds the memories of those who have died. Players take on the role of Rom, a young man who has lost his memory and finds himself living a life of crime. The city itself is a layered, dense space, packed with side quests, hidden items, and optional dungeons.

Augustia rewards wandering. Side content is plentiful, and the game rarely forces players to move in straight lines toward a main quest. That freedom is one of the game’s strengths.

Rom and His Party

Rom’s group of allies, known as the Monstrum, each bring a distinct skill set to combat. Players can switch between characters mid-fight, chaining combos together for a fluid, satisfying rhythm. The combat system is simple to learn but deep enough to reward repeated playthroughs.

Boss fights stand out. Each one asks players to adapt to changing enemy patterns, and the game’s difficulty curve rises steadily without ever feeling unfair. The bosses are memorable, and their designs carry over into later stages.

The Crime System

The crime system is the game’s boldest idea. Players commit crimes, gather evidence, and build cases against other characters, then present those cases in a courtroom scene. It is a strange combination, but it works. The courtroom segments are brief, and they break up the action with a change of pace that feels earned rather than forced.

Not every crime is successful. Some attempts fail, and the game handles failure gracefully, letting players try again without punishment.

Performance Across Platforms

Ys IX: Monstrum Nox runs on multiple platforms, including Stadia, PS4, PC, and PS5. Performance varies by platform, but the core experience remains consistent across all versions. Load times can be long on some systems, especially during dungeon transitions.

The game’s presentation is bright and colorful, though some textures appear rough in close-up scenes. Character models are expressive, and the animation holds up well during combat sequences.

What Works Best

Several elements stand out consistently:

1. The combat system, which rewards switching between characters mid-fight.
2. The boss design, which keeps players guessing.
3. The crime system, which adds a layer of investigation to the usual action.
4. The open layout of Augustia, which rewards exploration.

Where It Falls Short

Some side quests feel thin compared to the main story, and a few late-game dungeons repeat earlier patterns without offering much new. The difficulty spikes occasionally, and a handful of boss fights require precise timing that can frustrate players who are not fully prepared.

The game’s pacing also slows in the middle portion, before the final stretch picks back up.

Ys IX: Monstrum Nox succeeds by balancing crime, combat, and exploration into a single package. Its crime system is a risk that pays off, and its combat remains tight throughout. The game stumbles only slightly in its pacing and occasional difficulty, but those flaws do not outweigh the strengths.

This is a game built for players who want to lose themselves in a sprawling city, chase a mystery, and fight monsters along the way. It earns its ambition.

action RPG · game review · Monstrum Nox · Nihon Falcom · Ys IX