It is free for download here (scroll to the bottom of the page).
It looks and sounds exactly like the original. I'd have to think using a mouse would be a tad easier than a trackball these days, but it's still a brutally hard, and fun, game.
The only requirements are an Amiga with 512KB.
I asked Kev_G if that meant it would work on OS 1.3, and NTSC.
Kev_G:
Pretty cool!Hi Amiga Love. It was a lot of hard work but it was worth it. It 'should' be OK on NTSC as the screen height is 210 pixels. Yes it works on OS 1.3 but plays much smoother on something a bit quicker.