This game is based on the SameGame where you click groups of colours to remove them. Nowhere on the site is the basis of the game mentioned.
If you don't get a x3 block on the levels that need 130 points or more it's pretty hard to get the points needed.
Clicking on the block with the ? gives you more blocks. It generally is a good idea to click on this block (set - you need two of a color to remove them) fairly early. On the early levels, see if there is a remove color block, then remove all the groups of that color (provided it keeps the remove block next to the same color in a set of two) then remove the rest by clicking the remove block set and then click on the "Add Blocks - ?" set. Not all blocks come with each new screen.
There are some codes that can help. Type destroyboulders to destroy one colour of boulders (only can be used once).