UNDER NIGHT IN-BIRTH II Sys:Celes

Developer: FRENCH-BREAD, Arc System Works
Released: Jan 24, 2024
Steam reviews: 87% of players recommend it, from 2,716 reviews — Steam calls that “Very Positive”
Tags: Action

On Linux, Steam Deck and Steam Machine

Proton: GoldSteam Machine: Unsupported

This game runs great under Proton after tweaks, per ProtonDB reports (34 reports). Valve rates it Unsupported on Steam Deck.

Valve rates it Unsupported on Steam Machine. Valve marks it Unsupported on SteamOS.

Proton tier: ProtonDB · Deck rating: Valve · Steam Machine, Steam Frame and SteamOS ratings: Valve · Compare 2,053 games · Every game Valve rated for Steam Machine

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Where to buy

Steam

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Price & availability

Best price now

$24.99−50%

at Steam→

Lowest ever

$19.49

at WinGameStore · 7/1/2026

Real recorded prices & subscription data via IsThereAnyDeal.

What owning this involves

Cloud saves · The store backs this game's saves up. That cover ends if your account does.From the store listing

Only what the store discloses. Nothing listed here means the store disclosed nothing — not that there is nothing to disclose.

Features

Full controller support

Single-player
Multi-player
PvP
Online PvP
Shared/Split Screen PvP
Shared/Split Screen
Steam Achievements
Full controller support
Gamepad Recommended
DualShock Controller Support
Steam Cloud
Steam Leaderboards
Family Sharing

From the game's Steam store page.

Languages

English
French
Italian
German
Spanish - Spain
Japanese · full audio
Korean
Simplified Chinese
Traditional Chinese

Steam lists 9 languages, 1 with full audio.

Age rating & content

DEJUS 14 · Linguagem imprópria ViolênciaThe rating board's own rating, as Steam relays it
IGRS 13 · Penggunaan bahasa Kekerasan Interaksi DaringThe rating board's own rating, as Steam relays it

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About this game

The developer's description, from the game's Steam store page.

Sys:Celes sinks towards ruination. For the Immortalize, the collapse of all that is, looms on the horizon. The curtain rises on the final chapter of the Hollow Night. Catastrophe beckons...

Experience the Dramatic Stylish 2D Fighting Action in the latest entry of the UNDER NIGHT IN-BIRTH series!

The first numbered sequel in the series!

▼ Choose from a roster of 24 total characters, with renewed visuals!

3 new characters join the battle: Moonlight Dancer "Twin Barrel Beauty" Kaguya, Indomitable Rampart "Steel Guardian" Tsurugi, and Endless Entity "Eternal Re-Birth" Kuon. You won’t be able to take your eyes off the intense battles between these 24 fighters with the highly detailed HD pixel art graphics!

▼ Simple inputs make it easy to jump into the fray!

New to fighting games? Not a problem – simple inputs mean even beginners can pull off moves with a single button!

▼ Now supporting rollback netcode for an improved online experience!

With the addition of Casual Matches, it’s easier than ever before to dive in and enjoy online battles.

▼ Introducing new moves and game mechanics!

All characters now boast new moves, such as Hyde’s Blaring Outrage and Linne’s Soaring Dragon. The new game mechanics Creeping Edge and Celestial Vorpal open up additional depth to gameplay.

▼ The final chapter! A new tale of the Hollow Night…

Sever the cycle. An end to the endless. May the tale of these countless Nights be concluded, on this eve, the moment of destiny. A long-awaited continuation to the tale of the Hollow Night unfolds!