In Falsus vs Arcaea: What lowiro Kept and What Changed

At a glance

What carried over

• The people. Director Guy, and composers who also wrote for Arcaea, among them ak+q, Arcaea’s sound designer.
• Songs. Cyaegha (USAO) and MIRINAE (TAK × Zekk) come from Arcaea. Ordirehv belongs to the same Feryquitous song series as Arcaea’s Arcahv.
• The score logic. A fixed maximum split across the notes, with one bonus point per perfectly timed hit, and the same letter grades from D up to EX+. In Falsus just counts to 100 million instead of 10 million. See scoring.
• The aerial lane idea. Arcaea’s arcs become In Falsus’ mouse-steered Field, with flicks added.

What is new

• Six keys on one hand. This is the big change. Arcaea players on the Steam forum describe having to learn from scratch, and the jump to ULT as much harsher than Arcaea’s difficulty steps. The difficulty guide covers it.
• Cards and Encounters. Songs in the story are fights where crafted cards trade damage as you play.
• A paid, finished game. No stamina or gacha, which answers a Steam thread asking whether it would be “as grindy as Arcaea”.

What players compare it to

Reviewers reach for arcade games more than Arcaea: Sound Voltex and Ongeki come up for the controls, and DJMAX and Cytus II for presentation. PC Gamer’s February preview called it “my go-to rhythm game when I can’t get to the arcade”.

Should Arcaea players buy it?

Most early Steam reviews come from Arcaea players, and they are Very Positive. The catch they mention is the controls: expect to start at MIN or EVO even if you play Arcaea’s hardest charts. Price details · reviews

Sources: the wikiwiki glossary, Miraheze song pages, lowiro’s Steam page, Steam reviews and forum threads, and PC Gamer’s preview, read 10 September 2026.