This game starts out great and shows nice potential, but by level 32 the computer exploits its unfair advantages over the player. The computer knows which marble colors are off-screen and always gets the colors it needs on its turn - most times it has red twice in a row while the player oftimes gets two greens in a row with no other choice to swap to when youre still at 75% health or above. Many times the game has stolen three star ratings on a level because it only provided me with blues and greens when all I needed is one red marble to finish the computer off.
Ive tried several different strategies to work around this (level 32) but the marble colors youre provided are apparently randomized and follow no predictable sequence - in other words, youre at the mercy of the marbles the computer decides for you.
Another game ruined by an implicit nag for in-app purchases.
Azasuke1988 about Marble Duel: Marble Blast