In Falsus collab & crossover songs, tracked game by game

The full crossover table

Direction reads from In Falsus's point of view: outbound means an In Falsus song you can play in another game; inbound means partner-side music released as part of the deal. Dates carry the precision the announcements gave — month only where the partners confirmed a month, exact day where they confirmed a day.

Cryogenic — the most exported In Falsus song

Cryogenic — Camellia ft. Petra Gurin — began as In Falsus's ULTIMATE 9 rite of passage and became the game's flagship export. The run so far: Arcaea in March 2026, the SEGA arcade trio CHUNITHM, maimai and O.N.G.E.K.I. in July 2026, Rotaeno on September 17, 2026, and Paradigm: Reboot on September 19, 2026. Two more landings are confirmed for September 25, 2026 — Muse Dash's Default Music pack and Phigros — which takes the count to eight games. Met it somewhere else first? The chart it comes from is In Falsus's six-key ULTIMATE 9, walked step by step in our Cryogenic ULT guide.

Verification status, entry by entry: the March and July arrivals are confirmed to the month; every September entry is confirmed to the day. Rows flip from "confirmed" to "live" as the September 25 drops go out.

Cryogenic in Muse Dash — free, not DLC

The Muse Dash crossover is an outbound export, and it costs nothing: on September 25, 2026, Cryogenic joins Muse Dash's Default Music pack — the free base pack every Muse Dash player already has. Camellia confirmed the crossover on X. And Cryogenic does not travel alone: PeroPeroGames has announced that the In Falsus track "Connected at first..." enters the same Default Music pack the same day, making September 25 a two-song drop. Coming from Muse Dash? Both songs are In Falsus originals — lowiro's six-key PC rhythm game, sold on Steam.

September 25 — the two-game day

One date, two landings: Cryogenic goes live in Muse Dash's free Default Music pack and in Phigros on the same day. Count both Muse Dash songs — Cryogenic plus "Connected at first..." — and September 25, 2026 puts In Falsus music in front of two of the biggest rhythm-game audiences at once. If you are arriving from either game, the song list and the Cryogenic ULT guide below are the shortest route back to the source.

The Arcaea partnership runs both ways

Arcaea is the deepest link on this table. Outbound, Cryogenic has been playable in Arcaea since March 2026. The partnership is also physical: at TGS 2026 (September 17–21, Makuhari Messe, Hall 3, Booth C-01) lowiro and Arcaea ran a joint booth where both games were playable side by side, with a dual-sided In Falsus × Arcaea clear card as the visit bonus.

Inbound, Arcaea opened its side first: "Château de cartes" by Inverted Silence ft. Pernelle — an Arcaea-side original, not an In Falsus track — joined Arcaea's Memory Archive on September 19, 2026 as the collaboration's lead-in. Direction matters when you are tracing a song home: this one flows from Arcaea, while the Cryogenic half of the exchange lives here, in In Falsus.