I have the same Thexder cart and loved it to bits. I remember seeing pictures for it in the Sierra games catalog (since they published the US PC version) and thinking that it just looked amazing (man, there were just so many frames of animation for the transformation!). Ended up picking up the famicom cart a few years ago just for nostalgic value.
I wound up getting the second Thexder game (Fire Hawk) for a present one year and never was quite able to beat it. Hard game with a limited continue feature, iirc. One of these days I'll fire it up in DOSbox and beat the damn thing, heh
Anyone know if Thexder 95 was any good and if it'd be worth tracking down? Sorry to tangent the hell out of this topic