PCGame

UNDER NIGHT IN-BIRTH II Sys:Celes

Technical 2D anime fighter with new mechanics and 24 characters

FRENCH-BREAD, Arc System Works · Published by Arc System Works · Released Jan 24, 2024

Action

Reviews
Mostly Positive
77% of 2,182
Recent reviews
Very Positive
96% of 30 in 30 days
Players
65
daily peak, Nov 7, 2026
Steam Deck
Unsupported
Last update on Steam
2 weeks ago
Oct 23, 2026
Minimum PC
GeForce GTX 680
4 GB RAM · 20 GB disk
Full requirements

What is UNDER NIGHT IN-BIRTH II Sys:Celes?

A 2D fighting game built around arcade battles and local or online PvP. Characters gain new moves, while the story continues the final chapter of the Hollow Night as catastrophe approaches.

For you if...

  • +you want a competitive fighter with a high skill ceiling
  • +you value patient defense and strong fighting-game fundamentals
  • +you enjoy spending time practicing complex execution

Not for you if...

  • −you mainly want a story-heavy single-player mode
  • −you prefer short learning curves and simple combos

What players say

77% of 2,182 reviews are positive · 96% of 30 in the last 30 days

Players praise the combat depth, particularly the GRD system, flexible combo routes, and varied character toolkits. The most common complaints concern a small online population, difficult matchmaking, and unstable connections with timeouts or teleporting opponents.

Players over time

▼ -70% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 328 players on Sep 22, 2026.

Show the data
DayPlayers
Nov 7, 202665
Nov 6, 202648
Nov 5, 202650
Nov 4, 202645
Nov 3, 202665
Nov 2, 202665
Nov 1, 202660
Oct 31, 202654
Oct 30, 202646
Oct 29, 202634
Oct 28, 202635
Oct 27, 2026107
Oct 26, 202697
Oct 25, 202694
Oct 24, 2026116
Oct 23, 2026123
Oct 22, 2026146
Oct 21, 2026140
Oct 20, 2026127
Oct 18, 2026129
Oct 17, 2026162
Oct 16, 2026166
Oct 15, 2026165
Oct 14, 2026146
Oct 13, 2026162
Oct 11, 2026138
Oct 10, 2026202
Oct 9, 2026196
Oct 8, 2026206
Oct 7, 2026176
Oct 6, 2026171
Oct 4, 2026210
Oct 3, 2026206
Oct 2, 2026167
Oct 1, 2026187
Sep 30, 2026190
Sep 29, 2026224
Sep 27, 2026248
Sep 26, 2026259
Sep 25, 2026276
Sep 24, 2026301
Sep 23, 2026118
Sep 23, 2026318
Sep 22, 2026328
Sep 21, 2026292

How many players finish UNDER NIGHT IN-BIRTH II Sys:Celes?

28% of Steam players have unlocked «The Final Night», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

UNDER NIGHT IN-BIRTH II Sys:Celes screenshot 1

UNDER NIGHT IN-BIRTH II Sys:Celes system requirements

Minimum: GeForce GTX 680, 4 GB RAM, 20 GB of disk space.

As published by the developer.

Can my PC run UNDER NIGHT IN-BIRTH II Sys:Celes?

Tell us your graphics card once and every game page will answer this for you.

Set up my PC →

Minimum

OS
Windows 10 / 11
Processor
Intel Core i5, 3.2 GHz
Graphics
Nvidia GeForce GTX 680 / Radeon HD 7970
Memory
4 GB RAM
Storage
20 GB available space
DirectX
Version 9.0c
Notes
Display Resolution 1280x720 and above recommended.

Does UNDER NIGHT IN-BIRTH II Sys:Celes have co-op or multiplayer?

Yes: PvP online and split-screen. It also has a single-player mode.

Does UNDER NIGHT IN-BIRTH II Sys:Celes run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

  • Not supported on SteamOS

PC version details

DRM
None declared on Steam
Controller
Full controller support
Platforms
Windows
Achievements
27
Steam features
Cloud saves, Family Sharing
Languages
Full audio: Japanese. Text only: English, French, Italian, German, Spanish - Spain, Korean, Simplified Chinese, Traditional Chinese.

Does UNDER NIGHT IN-BIRTH II Sys:Celes use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam

Tags

Recent updates

6 DLC available.

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