Deecy

Summary

Deecy is ranked #7 of 9 in Dreamcast emulators on Samsung Mobile US Press. It runs on Linux, Windows.

Compared on Dreamcast emulators

Free plan

Yessenryoku.github.io

Supported platforms

Windows, Linuxsenryoku.github.io

Controller support

Yessenryoku.github.io

Save states

Yessenryoku.github.io

Dreamcast BIOS required

Yessenryoku.github.io

Facts

product type

Deecy is an experimental Dreamcast emulator written in Zig.github.com · 30 Sept 2026

operating systems

The official site describes Deecy as an open-source Dreamcast emulator for Windows and Linux.senryoku.github.io · 30 Sept 2026

installation

Users download and decompress an archive, place BIOS and flash dumps named dc_boot.bin and dc_flash.bin in the data folder, then choose their disc-image directory.senryoku.github.io · 30 Sept 2026

disc formats

The command-line interface can load .gdi, .cdi and .chd disc files.github.com · 30 Sept 2026

fullscreen and speed

The emulator supports fullscreen toggling and an unlimited emulation-speed mode.github.com · 30 Sept 2026

Linux serial integration

The Linux-only --scif option pipes a serial port to /tmp/deecy/scif for dcload-serial prototyping.github.com · 30 Sept 2026

DreamPicoPort integration

DreamPicoPort support is available as an optional build dependency and can be disabled with -Ddreampicoport=false.github.com · 30 Sept 2026

compatibility

The project maintains a compatibility list and invites users to contribute through a dedicated repository.senryoku.github.io · 30 Sept 2026

known limitations

The README lists unfinished areas including AICA filtering, framebuffer handling, exclusion modifier volumes, and several renderer features.github.com · 30 Sept 2026

licensing

The project states that the rest of Deecy is MIT licensed, while MAME data uses BSD-3-Clause and CHD features are based on MAME code.github.com · 30 Sept 2026

support

Bug reports are directed to the project's GitHub issue tracker.senryoku.github.io · 30 Sept 2026

funding

The official site asks supporters to make a one-time donation through GitHub Sponsors.senryoku.github.io · 30 Sept 2026

Product

Deecy is an open source Dreamcast emulator for Windows and Linux.senryoku.github.io · 1 Oct 2026

Technology

Deecy is an experimental Dreamcast emulator written in Zig.raw.githubusercontent.com · 1 Oct 2026

Downloads

The official site provides unstable builds for Windows and Linux.senryoku.github.io · 1 Oct 2026

BIOS requirement

Installation requires copying BIOS and flash dumps named dc_boot.bin and dc_flash.bin into the data folder.senryoku.github.io · 1 Oct 2026

Disc images

Users select the folder where their Dreamcast disc images are stored.senryoku.github.io · 1 Oct 2026

Keyboard

Keyboard bindings can be customized in Settings.raw.githubusercontent.com · 1 Oct 2026

DreamPicoPort

DreamPicoPort support is available and can be disabled with the -Ddreampicoport=false build option.raw.githubusercontent.com · 1 Oct 2026

Linux serial feature

The --scif option pipes the serial port to /tmp/deecy/scif on Linux for use with dcload-serial.raw.githubusercontent.com · 1 Oct 2026

Issue intake

Issue creation is restricted in the Deecy GitHub repository.github.com · 1 Oct 2026

Maker

Sen describes himself as a software developer from France and identifies the project account as Senryoku.github.com · 1 Oct 2026

Where it ranks on Samsung Mobile US Press

• Best Dreamcast Emulators in 2026#7 of 9

Sources

• github.com/Senryoku/Deecy/blob/main/README.md· checked 30 Sept 2026
• senryoku.github.io/Deecy/· checked 30 Sept 2026
• raw.githubusercontent.com/Senryoku/Deecy/master/README.md· checked 1 Oct 2026
• github.com/Senryoku/Deecy/issues· checked 1 Oct 2026
• github.com/sponsors/Senryoku· checked 1 Oct 2026