Double post SORRY but I have a few nights off this week and wanna start 2018 off by finishing some games.
Today I spent about an hour on
Ghost Blade HD, enough to finish it thrice in easy mode.

This is a super busy, very colourful vertically scrolling shooter in the classic sense. 5 Levels, 5 continue credits, 3 possible ships, 3 difficulty levels, 1 pulse-pounding EDM soundtrack and endless laserbeams to decorate your own personal bullet hell.
What's neat about this one is that it used to be a Sega DreamCast homebrew game first, and the HD release came to Wii U just weeks before Breath of the Wild released. Given the amount of shmups on the Switch, I fully expect this to get ported at some point.
The game itself is exactly what you expect, but it's quite a quality product. The 3 different ships all feel suitably different (small & fast; medium with wide ranging shots; and one with very precise aiming), and it has a lot of options under the hood. You can display this in tate mode, change transparencies, invert buttons, change the images on the side of the screen, and in the credits I even saw an alternate soundtrack mentioned?
Complaints: loading times feel a tad long maybe, sometimes it's hard to see bullets between all the chaos, I hate the 'metal bikini look' on the standard background (see above), and the most petty complaint of all - I wish it played a cool sound effect before doing the "WARNING!" end of stage boss introduction. Now it's just a second or 2 of silence before the soundtrack kicks back in and that feels out of place.
If you're into shooters, this is a good option on Wii U (and hopefully Switch later on?), also for newcomers. I was able to beat all 5 levels on my second attempt (using every credit I had), so I'm sure the harder modes will satisfy genre veterans too. Is it the best shmup on Wii U? No, Sky Force Anniversary is a more complete package, and I personally prefer zoning out to XType+ over the frantic stress induced by Ghost Blade.
That said, it's great to see such a polished product from a small team who are willing to release things on the freaking Dreamcast and Wii U of all platforms (ok I guess it's also on Steam, PS4 and Xbone but shhhh).
Rating: 8/10