I've noticed that under mintinstall there is an option to install Dgen as a sega genesis/megadrive emulator, (in the game section of mintinstall) while being a command line app, I don't think it's suitable for new Linux Mint users.
Would it be better to replace it with Gens?
I couldn't add the .deb to this post so here is a link to the file - http://info.sonicretro.org/images/a/a9/Gens-2.15.5-gs-m5-1_i386.deb


