It is a more or less straight lift from the HERO system. The only things changed were to go from 12 segments to 6, 1 second segments to .5 seconds, and to go from SPD to number of actions

The HERO system is a pretty good system, for what it does. You just need a strong understanding of math in order to make characters (since it's easy to end up with the need to determine the cost of a power * (1/2 + 1/4) / (1 - (-1/2), etc.) and a heavy dose of imagination (so, how do I make a fireball spell again? Energy blast + area effect (explosion) + elemental effects - magic based - guestures...)