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'''redream''' is a [[Sega Dreamcast emulators|Dreamcast]] emulator. It was formerly licensed under GPL3 but then went closed source in January 2018.<ref name="Closed-news">{{cite web|url=https://gitlab.com/inolen/redream/issues/301#note_53633080|title=Statement from inolen|publisher=GitLab|accessdate=2018-04-20|date=2018-01-08}}</ref> There are two editions of redream: Lite and Premium. Lite is free to everyone but you need to sign up an account to download it, while Premium is payware but added high-definition rendering compared to Lite.The emulator is one of the few if not the only Dreamcast emulator that can run without a BIOS; however, using a BIOS is highly recommended as some games may have bugs as the replacement BIOS is not currently perfect. ==System Requeriments==Operating system: Windows 7+ 64-bit, macOS 64-bit or Linux 64-bitProcessor: x86_64 compatible with AVX2 or SSE2 supportMemory: 512 MB RAMGraphics: OpenGL 3.1 support (Order-independent transparency support is only avaliable in OGL 4.5 or higher)