So at least for me, it seems that regular version is quite literally flash game played within browser, so many aspects can't be properly described. Humble offers Adobe AIR package as well but only difference for flash version seems to be proper fullscreen mode and requirement for installing adobe AIR to machine for installation.
Steam version has been upgraded in every aspect, including engine changed to unity. Technically game has changed so much that article will fail to reflect both versions.
So make article to reflect steam version, cut down "developer" (same as official basically) and "publisher" (linking to kongergate) from availability and put note to "Official" that there's original flash version available to play for free?