Genre-shifting combat

Nier: Automata's combat sells itself in trailers as a PlatinumGames hack-and-slash — fast melee, light/heavy weapon swaps, dodges, juggles. That's the default mode. The full inventory of combat verbs is wider:

Mode	Camera	Verbs	When
Third-person hack-and-slash	Free 3D camera, behind 2B/A2	Light, heavy, ranged (Pod), dodge, perfect-dodge counter, jump	Default open-world combat
Twin-stick shmup	Top-down, 2B/9S piloting flight unit	Move + shoot	Vertical "flight" sections (intro, certain bosses)
2D side-scroller	Side-view, locked plane	Move + jump + attack	Hallways in the Bunker, Copied City sequence, several boss approaches
Top-down 3D	Locked overhead, character at centre	Same as default but constrained	Specific corridor encounters, Amusement Park introduction
Bullet-hell	Top-down, character is a small ship-icon	Move + shoot, bullet curtain	The hacking minigame (9S only) AND the Ending E credits
Idle / dialogue	Static camera, sometimes 2D	Talk, no combat	Bunker, Resistance Camp

The shift is camera-driven, not menu-driven. The player doesn't pick a mode. They walk through a doorway and the camera reframes; on the other side of the doorway, the verbs available have changed.

The default combat camera — hack-and-slash. Note the minimap bottom-right, the HP bar top-left, the enemy HP bar top-centre — every one of these elements is a Plug-in Chip the player has chosen to install. Source: Game UI Database.

Why this is more interesting than "set-piece variety"

Plenty of games include genre-shift segments — Uncharted has a stealth bit, Yakuza has karaoke. Those segments are typically marked: a clear loading screen, a clear minigame frame, a clear return. Automata does not mark its shifts.

A short walk in the Resistance Camp is in side-scrolling 2D. You exit through a door, the camera lifts to top-down 3D for the courtyard. You jog through a tunnel and the camera swings behind you for an open-world encounter. Then you mount the flight unit and you're in a top-down shmup.

The implicit rule: the room shapes the verb-set. A tight corridor wants 2D. A circular plaza wants top-down. A bossfight in open ground wants behind-the-character 3D. Camera angle becomes a hint for what the player is allowed to do.

This is rhetorical: the Bunker — YoRHa's institutional home — is shot in 2D side-scroller, like a Game Boy Advance. The Earth surface is shot in open 3D. Without a single line of dialogue, the camera tells you which is the cage and which is the world.

The hacking minigame — the most committed genre-shift

When 9S hacks an enemy or terminal, the screen cuts to a bullet-hell twin-stick shmup. 9S becomes a small triangular ship in an arena; the target is a black core. Hack the core under the time limit; survive the bullet curtain; unlock the system / damage the enemy / read the data.

The minigame:

• Has its own progression — chips affect it (Hack Defense, Hijack Boost, RAM-related chips).
• Has its own difficulty curve — late-game hacks are denser bullet patterns than early ones.
• Replaces certain encounters entirely. Some 9S boss "fights" are the hack.
• Is later promoted to an Arcade Mode at Access Points — a standalone shmum with score tables.

The hacking minigame, promoted to a standalone Arcade Mode at Access Points. The scoreboard format ("NEW RECORD 0 → 14") signals: this is a real game, not a transition device. Source: Game UI Database.

The Ending E credits use the same hacking shmum engine — but now the bullets are letters of the credits, fired at the player at increasing density. You shoot the credits to advance them.

This is one of the highest-leverage decisions in the game's design: build one good shmum, reuse it for hacking, for Arcade Mode, and for the final-final climax. Three uses for one system.

The Pod — a shooter inside the hack-and-slash

Even within standard combat, the Pod (a flying companion drone with a chain-gun, missile pod, or laser) gives 2B a permanent ranged attack. So default combat is already dual-genre: melee with the right hand, twin-stick shooter with the left.

This shows up as the Pod programs subsystem — separate from chips, with its own progression menu. Pod programs include long-cooldown specials (gravity well, decoy, 360° barrier) that function more like a MOBA ult than a shooter weapon.

The whole skill system is two things: chips (the loadout) and Pod programs (the cooldown abilities). Two systems doing different jobs — passives vs actives — explicitly separated at the menu's top level. Source: Game UI Database.

What this teaches

• Camera angle is a verb-set hint. Before any tutorial pop-up, the camera tells the player what the controls do now. This is much faster than text.
• Genre-shift only works if the underlying input language stays consistent. 2B's controls in 2D are just the 3D controls projected onto a plane. The player doesn't relearn buttons; the camera relearns them for them.
• Build a transition device once, reuse it three ways. Automata's hacking minigame is mechanic, transition, and credits sequence. The shmum engine has higher ROI than any other PlatinumGames system.
• Rhetorical camera framing is essentially free. The 2D Bunker is the same 3D environment with a fixed camera. No new assets. Massive narrative payload.

Patterns this exemplifies

• genre-shifting-camera — verbs change with camera framing, not menu select. Uncurated; Automata is the only entry currently using this.

Adjacent

• Mega Man Battle Network also blends two genres (action + card game), but in a fixed 6×3 grid — the inverse approach.