The most beautiful and scaling of "io" games is "starblast.io." Switching on the game for the first minutes you can't guess if it is really a browser game as all the details are well planned. Mechanics, audio and video components is thought out and is admired. In "starblast.io" you will navigate your spaceship and compete with real opponents to see who is the most successful in powerleveling of his space machine. A lot in this game depends on how you upgrade your ship, so give it a special attention. It is worth noticing that the game will be soon available on Steam, this fact alone already says a lot!
The game has outdone its "io" counterparts in operation as well. At your choice is operation by the mouse (left mouse button-attack, right mouse button-acceleration) and by the keyboard (spacebar-attack, shift-movement).