I have to say I really like the graphics though. The colourful blockiness just looks great to me - and there's some nice parallax scrolling going on too. Most importantly the enemy bullets are easy to see.
Glad you enjoyed the review, James!
It's one of those cases where I wish I could have had some proper experience of the original arcade machine to make a proper comparison. Something that I couldn't really get to the bottom of, even though I did go looking for it in my research, was whether the blocky look of the graphics was an intentional downgrade.
From what I gather, the Megadrive / Genesis was able to shift things around much quicker on screen if they were lacking in detail. And this game really does ramp its pace up to a fair lick at times - all without screen flicker or slowdown. That's always a big deal with 8 and 16 bit action games.
Really pleased I was able to get my hands on this one to cover. It's an unsung gem!