Ss_teven has released beta 7 of his Master System/Game Gear emulator for Dreamcast! What’s new in this beta:

• Games actually playable!
  
• Game Gear rom support
  
• 2 player support
  
• fixed 32bit memory align
  
• removed faulty GUI, added in new one
  
• removed all commandline optimizations
  
• sound support
  
• supports upto ~2000 roms on a CD
  
• tile accelerator now used (doesnt really speed it up thou)

You can find it at his DevCast site at http://devcast.dcemulation.org/ and soon on our SMS Plus! page as well.