Put an alien in every empty square till you fill the whole board. But be careful! You must avoid 3 adjacent same colored aliens (horizontally, vertically, or diagonally).
Some squares are fixed and you are not allowed to put an alien there. But use those squares to your profit. You know, sometimes creativity need constraints ;-)
The game is entirely developed with Vanilla JS. RequireJS is used for modularization. The purpose is to learn so anybody is welcome. Are you looking for some easy javascript project to make your first contribution at GitHub? This may be the one!
Original idea by Erich Friedman. Each puzzle has a unique solution. All puzzles © Erich Friedman, 2010.