Flycast vs nullDC 2.0.0

Flycast Dojo is a free, open-source fork of the Flycast emulator for Sega Dreamcast, Naomi, Naomi 2 and Atomiswave. Its focus is netplay and replay, with training tools for supported games. Players can connect using Match Codes, direct IP connections or virtual LANs such as ZeroTier or Radmin. Match Codes use an internet relay to help start peer-to-peer sessions through firewalls without an account or extra software. Netplay sessions can be recorded and played back, or transmitted to a replay server or listening spectator. Training Mode supports RetroArch .cht cheats, savestates, and recording and playing back inputs. Players can compare ROM MD5 checksums, while successful peer-to-peer play requires matching ROM and BIOS files. The project is bundled with Fightcade and Arkadyzja. It is listed for Android, Linux, macOS and Windows, though the official site links downloads for Windows, Linux and Mac. The documentation notes that Match Codes may have problems on some cloud gaming services or corporate networks.

nullDC 2.0.0 is a Sega Dreamcast emulator, with a browser option and downloadable builds for Windows, macOS, and Linux. The browser page provides a WASM embed where users can drop files to start the emulator. One startup option uses dc_boot.bin (2MB) and dc_flash.bin (128KB); the other is an .elf executable. The project describes its aim as accurate emulation. Its builds page lists v2.0.0-pre-388-g95a924b as the most recent build, dated 2025-11-10 08:17:38 UTC. Windows and macOS artifacts are listed for aarch64 and x86_64; Linux artifacts include aarch64, riscv64gc, and x86_64. The project is open source under the MIT license, which provides the software without warranty. The home page also lists older beta releases, including beta 1.6 from 2007, and a stereoscopy build from 2008. The historical beta 1 netplay server is listed as compatible only with beta 1. For help, the project directs users to its forum at ngemu.com.