Caffeine. Binge-Watched TV. Concentric Rush. Three addicting experiences that are impossible and pointless to live without. Concentric Rush is a refreshingly original take in a crowded class of casual games and sure to be an instant hit. Why even waste time reading this review when you could be smashing circles with feverish delight? Whether on the can, in class, at a meeting or on-the-go Concentric Rush will keep you entertained. The design is very tasteful and offers a variety of play modes. I particularly appreciate that the app can be played from any orientation, allowing you to tailor your experience to the play style that best suits you. As a lefty, it really helps to play the game in landscape with the buttons orientated on the left hand side and the text rotated properly. Righties, don't despair! You can get the equivalent experience by flipping the phone the other direction. This flexibility is especially nice when one hand gets tired. I personally prefer playing using the normal color scheme but the flood mode looks really nice and helps vary the experience. Ultimately, this is great app from a developer that has clearly thought through all the details. Easy 5 stars. Download it now! You won't regret it!