Regions
Targets always spawn on the white marble and move to the round tiles.
This region provides for a reasonably wide building area and a long run for the targets. Take advantage of the space to construct your favorite traditional mazes.
Funnel your targets into two different mazes, or wall off one side to force them all down a single narrow channel. Note that you can build towers on the center ridge.
Take advantage of a wide area to build convoluted mazes with your towers. Try walling off one of the lower ramps to force the targets down one side, and don't neglect the opportunity to get extra shots off at the targets as they cross along the top or bottom of the terrace.
The run is long, but you don't have a lot of space to build a maze. Place your specialized towers very carefully and do the best you can.
You can't build in the water, so this region lends itself to having two smaller mazes instead of a single large one. You can place towers on the cliff above you if you run out of space.
You can't build on much of the floor of this region, to plan carefully and take advantage of towers placed on the plateaus.
Your walls are half-built for you here! Take advantage of the inherent structure of this region to build a larger maze with a smaller number of towers. Take careful note of the size of your targets and budget your gold carefully.
This region has foiled many a builder with its asymmetrical ramps and passages, but don't worry, you'll be given some extra time to build. Place your towers very carefully to avoid unwanted gaps or blocks and do the best that you can with the strange terrain.
The runners are forced through narrow bottlenecks at the beginning and end of their run, but there's a lot of space to spread out between those points. Consider whether you're better off making your maze wide or narrow.
There are a lot of routes you can force runners to take as they move through this region. Keep the range of your towers in mind when choosing where to block.