Kino One is a retro 80s arcade-style shmup, vertical-scrolling, with borrowings from the bullet-hell style and R-Type-like bosses. The 80s feel is reinforced by some nice flourishes; the start-game screen shows several arcade cabinets, and in addition to playing Kino One itself, you can select some of the other cabinets and play small Pac-Man and Arkanoid clones. Among the logos displayed during the start-up sequence is a Department of Justice logo along with a warning against drugs -- a common feature of early 80s arcade games.
There's a manga-style story intro, which I of course ignored. Actual gameplay begins fairly easy, but difficulty ramps up with wave and level, and serious shmuppers will find later levels at least moderately challenging. Ship capabilities improve as you collect stars and other power-ups that appear when enemies are killed; each of the levels has a fairly impressive boss.
There's two-person coop play -- four hands on the same keyboard, although joypads are also supported.
There's not a lot of novelty here, but Kino One is a nicely executed game in a comfortably familiar style, and developed with considerable knowledge of and affection for the genre. It's also not freeware, but the demo is fun in its own right, and fi' dollah for the full game won't break your bank.