Nice shaders! I enjoyed it though I'm not sure what the +shoot powerup does. Excellently paced and reminds me of a lot of old arcade games.
Thank you!!.Shoot power reduces waiting time between shoots. At the beginning you shoot twice and after 1.5 seconds you shoot twice again, if you use a +shoot the time is reduced by 0.5s. With 3 +shoot you shoot without stopping.
