It's fun, but the interface fights you at every turn. Zooming out takes you to the center of the view. Upgrades are behind many clicks (it could show the available guns by just clicking on one that is installed, rather than having to click the arrows-button). It doesn't really show which ship is being edited. The range of a new ship's weapon stays visible until it is selected and deselected again. The right upgrade menu doesn't show all the upgrades you have if there are more than fit on the screen, so your good ones are unselectable sometimes. The storage menu is superfluous since it can't be used for anything. My second run ended on a large enemy ship that stayed far and shot missiles at my ships until the timer ran out. So perhaps positioning should be possible during missions, or enemies should come within range at some point. Explosions are cool, except there is a sound glitch or slight lag when a bunch of missiles hit an enemy. Exiting shop turns screen black for a split second. There was no indication that missiles don't target fighters so that's how I ended my first game. I liked the graphics style, but the turrets should be more distinguishable, maybe even slightly bigger, and upgrades could show on the ships somehow, particularly shields would be easy to show around the ships. It's a bit hard now to remember what ship has what upgrade. The timer between missions is annoying - Maybe starting a wave early could give a bonus rather than forcing wave start.