When I first started on YS a couple of years back there was a great controversy over this game. It was one of the first vertically scrolling shooters to appear on the Speccy. Gwyn and Rachael hated it, Phil hated it, but I loved it. Sure, it's not the fastest game in the world, but the graphics are superb - full of colour and imagination - and the gameplay - easy at first, but getting gradually harder - is perfectly judged. I played it for months.
Written by those funsters at Gargoyle — one of the most underrated programming teams in Spectrum history, Id say — it was a great success and paved the way for around 60000 similar programms. Gwyn and Rachael gave it seven at the time, but they were wong: it still plays like a dream and I'll give it eight.