BlastEm is...
- an emulator for Sega's 16-bit and 8-bit consoles
- free and Open Source
- fast enough for your old PC
- accurate enough for the most demanding demos
While BlastEm's primary focus is the Genesis (known as the Megadrive outside North America), it also supports the Sega CD, 32X, Master System, Game Gear, SG-1000, SC-3000, Sega Pico and Yamaha Copera.
Top tier accuracy doesn't necessarily require a high-end computer. BlastEm was the first emulator to properly run Titan's impressive Overdrive 2 demo and also excels at synthetic accuracy tests. Despite this, it will happily run on very modest machines. It was originally developed on a netbook-class laptop from 2011 and can still run Genesis/Mega Drive emulation atfull speed on that same machine.
