Does anyone remember the Railgun in Unreal Tournament and/or Quake III Arena? Here it is! Well, clearly they have a ways to go before we have one that is portable enough to fit in a gun-like apparatus but it's a start, right?
I remember LAN Parties that spanned our whole 4-plex apartment building; 40 people, miles of cable (there was affordable consumer-grade wireless devices in 1998-9), my hand-me-down 48 port Cisco router and whole weekends of non-stop Unreal Tournament, Mobile Forces, Half-life Counter-Strike and Quake III Arena... Good times...
The US Navy will publicly show their formidable railgun at the Naval Future Force Science and Technology Expo in Washington D.C. on February 4. The formidable electromagnetic cannon launches solid projectiles over 100 nautical miles at more than six times the speed of sound. You can see it in action here:
hey will test it on board this weird high speed ship in 2016: