This is DOCKLANDS, it made an apearence in early gameplay shorts and trailers, but never made it into the final game; Might be the first time it's been played through in 20 years!
The leve's very long and there's a lot to shoot in it, but... it's a straight line, and not that much fun; I can understand why it's been scraped; It doesn't take advantage of what makes Red Dog so special, that being its Driving/Shooting controls and physics.
It was meant to be on-rails as far as I can tell, ourt tank was to sit on top of the train, but the train doesn't work.
Still; This is cool stuff, and there are more playable levels, locked in this prototype; Such as, CAVES, CITY, DOCKZONE, HYDRO, LEVEL1 and SWAMPS; I got all these to boot.
There are two more, TRAINS and SWAMPLANDS, but they crash the game when I try to load them.
I've dreamed of this ever since I got my hands on the original game, nearly 20 years ago, as from early videos, I could tell there was a lot that had been scraped during development.
This is exciting stuff.
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Red Dog Superior Firepower is a bit of a Car Combat game, but built around somewhat linear level exploration, scores and speed.
It's a simple concept, and one I haven't seen done anywhere else; Sadly, as this might be, quite possible my second favorite game of all time.
...the final release, was a fun game back then and quite replayable; Level layouts were simple, somewhat linear, but exceptionaly designed, enemy placement ensures that there's never a dull moment and surprisingly, the thing does not get repetitive in the process...