It's just a stage it's going through
Made some serious progress today with lots of game testing to try and get the right balance of the variables that create the difficulty. The game's now got stages that get progressively more difficult and it'll tell you all the information you need to know while playing. I've included a couple of touches to make the game more visually appealing so the sea and ferry move a little and the scanners draw lines to their current targets so you know what's scanning what. I'll add more touches if time permits.
Tomorrow's main jobs are to add sound and splash screens before packaging it up ready for submission. I need to let the player know when they've caught or missed an immigrant, which I'll probably use sound to do. I'm also thinking to add a top score feature to encourage efficient spending and make the game appealing to play multiple times.