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A 'playthrough' on Fusion emulator
The rom is one stage (without an end goal!) and there are no enemies.
A very early prototype (there is no sound) the rom was recently publicly released by its creator.
http://www.retrocollect.com/News/prototype-sega-mega-drive-game-frog-dude-rom-released-by-original-twilight-programmer.html
It reminds me of both Super Mario World and the later Wonder Boy games.
A nice look at what could have been...