Im 32 years old and have played games since I was under 10.
This is one of the best games that I have seen in my life. EVER. Everything that a great game should be. Simplicity, reflexes and high level play. Believe me when I play games I break them down to the core to find all exploits.
Absolutely amazing and I would have happily paid 20 quid for it.
I think this despite owning Mario Galaxy 2 and playing some of the all time classics ever, Snatcher, Shenmue, Lunar, Zelda OOT, Outrun 2, Virtua Fighter series, SSF2x, R Type etc..... I really hold this game up with those ones.
Long may this excellent series continue. SHMUP next in the series please.
A beautiful game that I will be playing for years.

(Okay, I admit it's not a SHMUP in the traditional sense, but you still dodge bullets and such.)
I loaded it up with anticipation, had a real geek moment as it began, then it all fell apart for me a few levels in.