DuoFall is a block puzzle with two playfields: pieces fall down from the top, and rise up from the bottom - both meet at the golden middle line, which drifts when you play one-sided. You control both fields at once, with one mind.
The drifting line
Play one-sided and you lose building space. Harmonies (alternating clears) pull the line back - the heart of the game.
Live matches & ghost duels
Play online simultaneously, with a live view of your opponent's field. Or race against recorded runs, including your own.
Together & daily
Daily challenge with a worldwide success rate, a community goal and leaderboards with replayable, verified runs.
Tournaments & group rooms
Knockout tournaments for 4-16 players and group rooms where everyone plays the same pieces at the same time - the other fields run live beside yours.
Pressure gold & tempo
When space gets tight, clean stacking turns pieces to gold - worth double when cleared. The tempo rises with lines or time.
A sea that knows your weather
The background is alive: waves, wind, rain, snow and time of day can follow the real weather outside your window.
This is how DuoFall plays
Marathon mode, uncut alpha footage (v0.1.17)
Download now
Current alpha: v0.1.20 · free
Closed alpha: a small circle is playtesting right now. Want in? Apply below - we hand out spots in small waves and send you the access code.
Windows: launch notes
Unzip, run DuoFall.exe. If SmartScreen appears:
"More info" → "Run anyway" (the alpha is not signed yet).
The data_… folder must stay next to the EXE.
macOS: launch notes (needed once)
Unzip with Finder, then in Terminal: xattr -cr ~/Downloads/DuoBlock2.app
(adjust the path if needed). Then right-click the app → "Open" → "Open".
Required because the alpha is only ad-hoc signed.
If your Mac still says "cannot be opened" (happens on some
models, e.g. M2): run
codesign --force --deep -s - ~/Downloads/DuoBlock2.app
once (re-signs the app locally - takes 2 seconds), then right-click →
"Open" again. After that it starts normally with a double-click.
Linux: launch notes
Unzip, then: chmod +x DuoFall.x86_64 && ./DuoFall.x86_64
- keep the data_… folder next to it.
Legal notice (Impressum)
Information according to § 5 DDG (German law): Julian Radins · Contact: hello@duofall.com
Private, non-commercial test page for the closed alpha of the game "DuoFall" (limited tester circle). No sales, no ads, no tracking.
Privacy - short and honest
This website: no cookies, no tracking, no external services. Technically required server logs are created by the hoster (ALL-INKL.COM - privacy information), which we do not evaluate.
Playtest application & updates (voluntary): If you enter your email address, we store it solely to manage the playtest (spot assignment, access code) and to send DuoFall update notes. The subscription only becomes active after you click the confirmation link (double opt-in, Art. 6 (1) (a) GDPR). Every mail contains an unsubscribe link; unsubscribing deletes the address immediately. No sharing with third parties, no tracking inside the mails.
The game: explicitly asks on first launch whether online features may be used - without consent everything runs fully offline. With consent it transmits a random, anonymous player ID, a freely chosen display name and game results (points, lines, replays) for the leaderboard, duels, live matches and the community goal; with the optional account, the credentials you chose yourself (passwords only as a hash). IP addresses are only used as a non-reversible hash for abuse protection and never stored in plain text. No sharing with third parties, no ads. Deletion requests: by mail (above) or in-game via "📨 Contact & feedback".