What's the deal on these Asian "Right Brain" education programs for little kids?

I'm taking about "Makoto Shichida", Tweedle Winks, Memory Magic Accelerated Learning Games for Children, etc.

Seems like a bunch of Voodoo.

My kid's been reading since way before 3. So I'm not trying to get him to "accelerate" but he might like this quirky kind stuff.

Does it have any merit? is it bad for him?

thanks