Quadrilateral Cowboy is a retro-hacking heist game in which you dial into security systems with your trusty 56K modem to open doors, disable security, and perform other feats of digital derring-do in the service of the highest bidder. It's quite good, a smart puzzle game, overflowing with personality, and now developer Blendo Games is giving players the opportunity to hack it up for real by releasing the source code.

Quadrilateral Cowboy uses the idTech 4 (Doom 3) engine. The source code is written in C++ and includes the solution files for Microsoft Visual C++ 2010, the studio said in a note on the FAQ, which includes the download link. The source code is released under the GPL license.

Putting out the source code like this is unusual but not actually unexpected at least for those of you who were paying attention three-and-a-half years ago, when developer Brendon Chung committed to doing so. He also offered a pretty good idea for what someone with the appropriate expertise might want to do with it:

@floatvoid Yup. Quadrilateral Cowboy source code will be released with the game. Sooooo if you want to add Oculus Rift support that'd be radFebruary 26, 2013

Chung also recently committed to providing deleted scenes from the game as extra levels, which will be available for free via the Steam Workshop.

Puzzle-meets-heists-meets hacking game Quadrilateral Cowboy released last week and Tom seemed to enjoy his time with it. Creator Blendo Games signature sense of style won him over, however he did feel slightly let down by the fact the studio s latest venture failed to reach its full potential. Could more missions free-of-charge help this matter? In any event, Blendo's head honcho Brendon Chung has revealed more are en route in the coming weeks.

During a Reddit AMA, Chung spoke directly to Quadrilateral Cowboy s scope and explained that he generally tailors his projects around his own skillset. For the most part, he says. I think Quadrilateral Cowboy does a pretty good job at not over-extending its reach.

He was then asked if he had any plans to create more missions at some point down the line, to which he responded: I have some deleted scenes I intend to package up as a mod download. I fully intend to [make games with a similar art style], I grew up playing a ton of first-person games and have a soft spot in my heart for them. I also plan to continue keeping all of my games in the same shared universe, so look forward to more of that.

Speaking to RPS, Chung later confirmed that the extra levels will be free and made available via the game s Steam Workshop. While he doesn t have a set date in mind right now, he suggested that he is loosely aiming for sometime in the next couple weeks.