What will happen to unsold tokens which have not been sold during the ico phase?

Will those tokens be burned?

This is correct Drokzid. Unsold tokens will be destroyed.

why would they burned the tokens? If they can give all the tokens to all participants , that will be great instead of destroying the tokens.

i think, burning unsold token will easy to increase token value.
some project do it and reach good perform after ICO.

Increased token value also offers us (who has it) increased profit when we trade it.

Thats true, if the demand remains the same and the supply decreases, then the value/price will increase.