Just played the demo. It's definitely an alpha demo. No music, one stage in continuous repetition, one boss who keeps on coming back for more. I stopped playing after about 15 minutes having not died even once.
To the thread point: The game is presented in a vert format, but it does not natively support tate(rtots) in options. I then tried to rotate the desktop first, and the game ran, but would not fullscreen (ALT-ENTER) properly. Maximizing the window worked, but then of course you're left with window frames etc. I imagine you could probably cludge a solution for this (windowed fullscreen somehow?) but as it stands, it wouldn't be worth it, in my opinion (see below.)
Personally, the game didn't exactly turn me on. I think it'd be fine after a few beers... if I was really hard up to play something... and if I didn't have Crimzon on speed-dial, with an open invite... music might help.
It felt generic, like it was aping a bunch of other, older, better shmups, with no personality of its' own. It felt stiff, like a bad Mame clone/prototype (haha... again, alpha demo!). That said, as in the reviews, enemy patterns kind of seemed random and/or uninteresting/unchallenging, even after the escalation of several minutes of play.
I wouldn't pay more than a buck or two for the full game, even with proceeds going to charity. Again, just my opinion of what I played.