Flash Focus is a $20 spin-off of the Brain Age series, and is well-worth the value.
GAMEPLAY: 8.5/10
While, honestly, the developer's focus in Flash Focus wasn't to make a visually stunning game, it is actually very nice. The sports games (baseball, the punching one, etc.) feature some nicely rendered graphics.
GRAPHICS: 7.5/10
There are some simple tunes, not much but is well suited for the game.
SOUND: 7.5/10
This game is meant to be played every day and with its addictive system and replayability, I bet it will be.
LASTING APPEAL: 9/10
Overall, Flash Focus is well worth the value if you are looking for fun, yet challenging games that can actually help your health.