While Sky Force Anniversary doesn't do much in the way of re-inventing the shoot-em-up genre, it's a testament to just how well this style of game still holds up today. It's addictive, it's satisfying, and it encourages you to hone your skills to score perfect runs across a limited variety of levels. There's a good amount of replayability here as a result, though that doesn't make for a great deal of diversity or exciting set-pieces to look forward to. The mechanics are sound, but feel weighed down by the need to grind in order to progress, along with a serious dose of deja-vu from the environments. Still, at its low price this is a flight well worth taking, even if it only lasts a couple of hours. If you're happy to grind and enjoy a well made shooter, it's a welcome option on the Wii U.