Click the green flag to position five islands in the archipelago. All five islands are placed randomly north of the boat to start. Use the left and right arrow keys to steer the ship. Use the up arrow key to move forward. Use the back arrow key to move backward. If you visit an island, it changes color.
This framework could be used for scrolling/exploration games that are multidimensional, since the position and orientation of every island with respect to the ship is stored, even when the island is not displayed. NOTE: Calculation errors accumulate over time, leading to some migration of the islands.
