Just a clarification: "indie" doesn't mean "free".
'Indie' is a term for independent, which means the development team is free from the ties of a publishing company. Just because a company is independent, doesn't mean they can't and wont charge for it. Such examples are Jagex (the UKs most successful UK developer), Blitz Games and Valve to extent.
Renegade-X will be free nonetheless. You will simply need a broadband internet connection to download the game and a PC capable of running it.
Environment & Hard Surface Artist