Bridge Sort

Bridge Sort is a casual bridge puzzle where you help friendly aliens move from platform to platform. Nobody really knows why they are doing this, maybe it is training or prep for a competition, but your job is to make sure each little creature crosses safely. On the field you see pairs of same-colored platforms, along with gray platforms in between that change color depending on which group you send to them. As you move through the levels, the gaps between platforms get longer and obstacles appear, so you have to plan ahead and think through every move.

How to play?

You see platforms marked with a color and a number, which is how many aliens need to be moved from there. The paired platform of the same color receives that many aliens, and the gray platforms act as halfway points, taking on the color of the group as they move. To build the first half of a bridge, click on the starting platform and drag a line to a gray platform, then stop there, and do the same for the second part of the bridge. Bridges are drawn directly between platforms, and if you need to, you can route them around black barriers, even diagonally, to get past blocks on the direct path.

Bridges can break, so it is important to plan the route so the entire crowd can cross in one continuous flow. If you do not send all the groups at the same time, some of the aliens will fall and the level will fail. There is a progress bar at the bottom of the screen that fills up as creatures reach the other side, and if it does not reach the target mark, you will have to replay the level. At the end of each round you get a reward based on how many aliens you delivered. Before you start building, think a few moves ahead and split the groups so that all routes work at once.