Ah, Dezaemon. This is probably the first game (at least on consoles) to feature a create-your-own engine. This lets you create your own vertically scrolling shooters, a-la Raiden, for example. You can edit enemy flight patterns, levels, graphics, even the music. If creating games isn´t your thing, it comes with a sample game (which is DAMN hard I might add.) I love this series :D
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