Dualtris

Musical Tetris with a dualistic twist: Play regular, then play in your negative space!

The blocks you leave on one side form the space for the other side you play on.

It's already super-playable, and is captivating us by how deceptively simple it is. At first it is exactly Tetris, but if you zone out and play it like Tetris you betray yourself.

Controls

PC / Mac / Linux

Supports Keyboard & Gamepad

Action	Keyboard Right Handed	Keyboard Left Handed	Gamepad A	Gamepad B
LEFT	Left Arrow Key	A	D-pad Left	Left Stick
RIGHT	Right Arrow Key	D	D-pad Right	Left Stick
DOWN	Down Arrow Key	S	D-pad Down	Left Stick
UP	Up Arrow Key	W	D-pad Up	Left Stick
ROTATE LEFT	X	J	A, Cross	Left Shoulder
ROTATE RIGHT	C	K	B, Square	Right Shoulder
RESTART	R	R	Select	Select
DEBUG	/	/

• FAST: Hold any movement button to move fast
• DROP: Press the button opposite to gravity to slam down a piece.

Mobile / Touch

Rudimentary touchscreen support. This will be much improved in a new build after the jam.

With your screen in landscape orientation:

ROTATE LEFT	UP	ROTATE RIGHT
LEFT	DOWN	RIGHT

Graphics

If your device and browser support WebGPU then you get fancy particle effects! If not, the game falls back to simpler visualization for now.

Credits

Team

• Ren9: Music, Testing
• Brightonic: Music, Testing
  
• Angel Haugland: Music, Testing
• Sunbearwizard: Game Design, Testing
• Rita Zatoloka:  Additional Design, Production, Testing
• Mar: Project Lead, Game Design, Programming

A Frantic Waltz Production, made in 7 days for the Composers & Devs Jam.

Made with

• Unity (Core Engine)
• VfxGraph (Fancy Effects)
• Shapes, by Acegikmo (Vector Graphics)
• WebGPU (Experimental compute shader support)
• FMOD (In-game audio, dynamic music)
• Bitwig Studio (Audio production)
• Ableton Live (Audio production)
• Claude (LLM-powered accountability buddy)

Inspired by

• Tetris Effect (Transcendental experiences using arcade game mechanics)
• Strange Scaffold (Shipping quality games fast, within budget and time constraints)
• Atlus (Style)

Special Thanks

Brightonic would like to thank:

• Everyone involved with the game and all the players!

Ren9 would like to thank:

• My wife, family and Mar!

Mar would like to thank:

• Everyone who jammed this week, and everyone who plays the game
• The community organizers of the Composers & Devs Jam
• Hanze Hogeschool, for trusting us with interns & grad students
• Rita, for this Frantic Waltz we dance
• Diana van Houten and Joke van Iperen, for encouraging me to make art and ship it
• My friends and family, for supporting us, believing in us.

Thanks for an amazing jam, everyone!

Donations

Any donations go directly towards improving this game, and ensuring we can do more jams this year!