Take the classic "Asteroids" style game, crank it up to 11 and you have Echoes+!
This shooter features six game modes, four difficulty settings, a handful of powerups and an achievement/challenge system for extended play. The controls handle perfectly and for the most part the game is simple but effective - shoot stuff, grab goodies, repeat.
Echoes+ is a feast for the eyes with neon-colors and explosions everywhere. The sounds and music are lively but not distracting, which is important because you need to stay focused. Thankfully everything is easy to see, so you're not going to be cheapshot by 1-pixel bullets. The UI is classic and clean, but Echoes+ adds a few visual cues to inform you of important info (such as your energy and number of bombs), which really helps when things are getting fierce.
Echoes+ is available on a fair range of platforms (Steam for Win or Mac, OUYA, fireTV, Xbox) and is just plain fun, so go play it already!