35 moves to save 16 snails of any color. 14 of those snails can be found in the main grid where there will be ample opportunities for a match-3 or more. The last two snails on the other hand, might prove a bit trickier to get but not impossible. Since there are vertical striped gifts in both of those grids where the last two snails are, we can always try and unwrap those ones specifically with the help of a booster or another special gift.

Otherwise, we can make our own striped gift, a horizontal one, and guide its way to the bottom of the grid. There, we can match and explode it for an instant double snail save. 

Force Field Tower Levels
Level 1Level 2Level 3Level 4Level 5Level 6Level 7Level 8Level 9Level 10

Level 11Level 12Level 13Level 14Level 15Level 16Level 17Level 18Level19Level 20Level 21Level 22Level 23Level 24Level 25Level 26Level 27Level 28Level 29Level 30Level 31Level 32Level 33Level 34Level 35Level 36level 37Level 38Level 39Level 40Level 41Level 42Level 43Level 44Level 45Level 46Level 47Level 48Level 49Level 50