Logon System

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Logon System 1990 Amstrad Expo
Logon System. 22 Sept 2006
Logon System at Revision 2018.

Logon System is a French demo group which is very famous due to really great demos and new techniques the coders at Logon use. While The Demo was for a very long time the best megademo ever released on the CPC, Overflow's demo III was one of the most extreme hardware demo ever produced.


  • Members of the group regularly wrote articles published in the French Magazine Amstrad Cent Pour Cent during its later life.
  • During the 2010s decade, Overflow still wears the mantle of Logon System's legacy, sometimes competing successfully at demoparties or trying to be a legend again with goodies to match his ambition.

Historical Members