This might be a bit old to some people but i though ill post it anyway.

Half life 2 Fan or not check this out.
Made as spec ‘advertainment’ for their demo reel.

Filmed guerilla style. No crew. First two episodes made on a $500 budget, not including previous capital. Valve flew the brothers out to Seattle last year. and mentioned they were ‘blown away’ by the project on Steam.

Escape from City 17: Part One

Escape from City 17: Part Two Teaser