Two soundtracks for the price of one, and the 8-bit versions might actually be better. Uchushinshuchu's 2023 Switch OST gives you every track twice: once in full modern production and once crushed down to chiptune. Stage Kepler has this interstellar drift to it that translates surprisingly well into 8-bit, and the Boss theme goes from intense to unhinged when it's running through a square wave.
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Flare hits hard in both versions, pure heat. The stage progression from Moon to Mars to Titan to Kepler maps out this escalating intensity that peaks right at Judgement. If you like space shooters and want to A/B test whether chiptune or modern production gets your blood pumping harder, this is your experiment.