I was suprised that this game was mentioned here
http://www.pcenginefx.com/forums/index.php?topic=19764.0 and nobody said anything about it! It's a shooter that is actually playable on a real system. And it is darn fun too There are still some bugs and errors for example you need to press the "run" button one time otherwise you can't move your ship. I mailed the author of this game and invited hime to come join the discussion here. He actually doesn't even own a PC-FX
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I'll update this thread later with vids and screenshots.