Flycast vs Redream

Flycast is a free emulator for Sega Dreamcast, Naomi, Naomi 2, and Atomiswave. Its Android listing says it runs most Dreamcast games, including Windows CE titles, and arcade games for Naomi, Naomi 2, Atomiswave, and System SP. Graphics options include OpenGL and Vulkan, high-definition and widescreen play, and custom high-definition texture packs. The Android listing specifies 10 save-state slots and names RetroAchievements, modem and LAN adapter emulation, and Power Smash online support in update notes. The project offers regular master builds, experimental nightly development builds, and versioned stable releases. The builds page describes master as relatively stable and cautions that other branches may be unstable, crash, or fail to run. Flycast is available for Android, Linux, macOS, and Windows, with controller support and online multiplayer listed. Game files are not included and must be owned by the user. The repository identifies the license as GPL-2.0.

Redream is a Dreamcast emulator for Android, Linux, macOS, and Windows. It lets players run Dreamcast games, with the homepage listing rendering at 1080p or 4K and play without controller setup or adding BIOS or flash files. The homepage says more than 95% of the Dreamcast library can be played from start to finish; the download page gives a figure above 96% and says that share can be played at no cost. Listed features include widescreen codes, automatic cover art, save states, and cheat support. The package is under 4 megabytes, and the homepage says it can produce a smooth 60 Hz on decade-old desktops and mobile phones. Redream is free to use on supported platforms. Premium is a one-time purchase that works across those platforms, with pay-what-you-want amounts of $6, $8, $10, or $20. It adds high-definition rendering, multiple save-state slots per game, and a custom Discord server role.