IMHO.

Arcadia Fallen vs Unexpected Number Neighbour

Arcadia Fallen and Unexpected Number Neighbour both land in Indie, Simulation, RPG on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Indie, Simulation, RPG on Steam. Arcadia Fallen (2021) is 5 years older than Unexpected Number Neighbour (2026). Arcadia Fallen is Deck Verified on Steam Deck; Unexpected Number Neighbour has no Deck rating yet. No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.

Which should you pick?

Choose Arcadia Fallen

Choose Arcadia Fallen if you want an Adventure game with Subtitle Options, Color Alternatives, and Camera Comfort. On Steam, it's Steam Deck Verified, so handheld play works out of the box. Arcadia Fallen launched in 2021.

Choose Unexpected Number Neighbour

Choose Unexpected Number Neighbour if you want the #category_playable_at_your_own_pace side of the pairing. On Steam, it's the newer release (2026) and ships with the modern feature baseline. Unexpected Number Neighbour launched in 2026.

Both Arcadia Fallen and Unexpected Number Neighbour sit in Indie, Simulation, and RPG on Steam and both list Custom Volume Controls, Playable without Timed Input, and Keyboard Only Option, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.

Side-by-side comparison

Arcadia Fallen vs Unexpected Number Neighbour — Steam metadata comparison
Arcadia Fallen — Steam game coverArcadia FallenUnexpected Number Neighbour — Steam game coverUnexpected Number Neighbour
Released20212026
GenresIndie, Adventure, Simulation, RPG, CasualIndie, Simulation, RPG, Casual
PlatformsWindows, macOS, LinuxWindows, macOS, Linux
Steam DeckDeck VerifiedUnrated
Price24.99 USDPrice unknown
Steam reviews95.3% positive (364 reviews)
MultiplayerSingle-player onlySingle-player only
DevelopersGaldra StudiosMoxeGames

Side by side

Arcadia Fallen vs Unexpected Number Neighbour — FAQ

Should I play Arcadia Fallen or Unexpected Number Neighbour first?
If you want chronology, Arcadia Fallen (2021) came out before Unexpected Number Neighbour (2026). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
Are Arcadia Fallen and Unexpected Number Neighbour similar?
They overlap on Indie, Simulation, RPG on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
Does Arcadia Fallen run on Steam Deck?
Yes — Arcadia Fallen is rated Deck Verified by Valve. Unexpected Number Neighbour doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.
Arcadia Fallen vs Unexpected Number Neighbour (2026) · imho.run