Water Taxi is a game of strategy and time management where you have to balance the goals of picking up passengers with the risk of crashing into the other boats in the canals.
Imagine yourself crusing in a fast high power speedboat around winding canals picking up passengers. All you have to do is avoid the slow pokes in the clog boats and the occasional rubber ducky and the number of passengers picked up will continue to climb.
Trace your finger along the path of the conals where you want the speedboat to go and it will follow that course. As it gets later in the day, there are more passengers to pick up. Thankfully more speedboats will be added to your fleet. But as the sun comes out, more of the sight seeing clog boats come out as well as the ducks to sun themselves, making picking up passengers even more difficult. But not for you, you know these canals like the back of your hand.
NOTE: There is a tutorial video of how to play the Water Taxi game on the www.aerende.com website under the sidemenu entry "Videos."