If you've played D&D or Pathfinder or something similar, S0urce C0de draws inspiration from them, but with a futuristic setting. However, it's designed to allow enough freedom to use it's rules and setup for many other d20 systems. You could...
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In a universe where the planets the number of planets seem endless and the amounts of adventures follow. Focus upon exploration and discovery or become a member of an elite force focused on law & order. Create your character focused on a multitude of things that don't have to rely on combat, but expanding into botany, science, technology, or more. In the worlds of S0urce C0de, you create your own pathways for your stories.