After the success of Guitar Hero have almost finished the game a little rhythmic disappeared. In the "scene" indie continued to appear few puzzle games that have more in common with a pre Guitar Hero and Retro / Grade is one of those games.
Despite the complicated premise of the game that puts the player in a spaceship to collect all the shots with the game over time as opposed to maintain the flow of time, Retro / Grade is just a rhythm game with some elements of shooter who will have to look hard.
Retro / Grade starts at the end, the first few seconds of the game are our ship to defeat the final boss and show the credits, but the flow of time is damaged and we have to go back in time and collect all of our nature shots during his match , while we should of shots of enemy ships. 7/10