BlastEm vs bsnes

BlastEm is a free, open-source emulator for Sega's 16-bit and 8-bit consoles. It supports Genesis/Mega Drive, Sega CD, 32X, Master System, Game Gear, SG-1000, SC-3000, Sega Pico, and Yamaha Copera. Downloads are listed for Linux, macOS, and Windows, with an experimental web version. Gameplay features include save states, cartridge save RAM and EEPROM support, turbo and slow modes, controller input, and VGM logging. Its integrated debugger can inspect and modify state, set conditional breakpoints, run scripts, and show visual VDP tools. Developers can use the GDB remote debug protocol for source-level debugging of SGDK and other C or C++ projects. The maker describes it as fast enough for older PCs and accurate enough for demanding demos. Most Sega CD and 32X games are playable, but compatibility is not perfect. Yamaha Copera emulation is incomplete: games generally lack music, though Copera-specific ADPCM samples play. The listed macOS download is x86-64 and not notarized; the page directs ARM users to Homebrew.

bsnes is a free, open-source emulator for Super Nintendo and Super Famicom games, with support for Super Game Boy and Satellaview. It runs on Linux, macOS, and Windows. Graphics options include HD Mode 7 with optional supersampling, a multi-threaded PPU renderer, and OpenGL multi-pass pixel shaders. The emulator also provides low-level emulation for SNES coprocessors such as DSP-n, ST-01n, and Cx4. It accepts standard ROM files, optional higan game folders, and 7-zip decompression, and can apply BPS and IPS soft patches. Its games database has thousands of entries, and its cheat database covers hundreds of popular games. Save states can include screenshot previews and names, with undo and redo. Other tools include rewind, frame advance, cheat code search, movie recording and playback, and screenshots. Speed settings are 50%, 75%, 100%, 150%, and 200%, with smooth audio output retained. The project lists nightly builds for Windows, macOS, Linux, and FreeBSD.