Stalwart is a browser game that you should very much play. It's got a knight, neon colours, flaming balls of fire, destructive beams of light from the sky, and the most wonderful music.

OK, more details: It's a sort of rhythm runner, playing out like a BIT.TRIP game but with more interactivity. Lasers, fireballs and the like try to strike you down to the beat, while you jump, dodge and flip around, keeping that score multiplier intact. It's magical, although highscore junkies will be left hoping for an update which adds online leaderboards. My advice would be to start straight away on Normal mode - you don't really get the full effect on Easy.

You know what this needs to be? An iPhone game. That would be an insta-grab for me. Go play Stalwart now.