Flawed.

Tammy only moves in bursts, which gets annoying when more things get onto the screen at once, all falling much than actual garbage would sink in the ocean (though much of it doesn't sink at all... I'd wager that no amount of charity money would be necessary to save Tammy's ilk from the apocalypse of broken fishing hooks that this game puts into the virtual waters).

The game has no real point to it. Technically it's an avoidance game, but as high scores are not tracked or submitted anywhere and there's no endpoint, whether I immediately let Fred eat Tammy or whether I go for 10000 points the game treats the accomplishment exactly the same. And believe me, the game itself isn't interesting enough to have no ending.

If you wanted to make an advocacy game, putting real statistics in, giving an enjoyable game that makes your point rather than an un-enjoyable game asking me to donate, these are the things that you'd want to work on.

Needs something to do

There is a distinct lack of challenge or objective in this game - one can get by easily by simply holding down the mouse at the right side of the screen. While the instructions are clear and well written, what has to be done is not clear, if indeed anything has to be done at all. While I respect the drive for turtle charity, it must be recognised that there isn't a whole lot of "game" here.

Great game

Excellent. I liked it, but it feels like the controls are a little stiff.