Croakr

You may have heard the myth; 

Put a frog in boiling water and it jumps out, but if you put it in tepid water slowly bringing it to a boil the frog stays put.

This is that, only it's humans being boiled, and the humans are in a pool and there's heavy metal playing.

Frannie the frog wants to impress her hot date from Croakr, the best way to do that is by making them mannequin human soup.

Bring the pool to a boil, use the up/down arrow keys to increase the heat (use the gauge in the top right) but don't be too eager or the people will fling themselves to freedom.

P.S. the myth is BS.