In system_editor.html, there is repeated html where all the biome "build" icons are manually specified. The following snippet can replace all of this, re-using the biomes array to dynamically build the bottom bar. Code: <!-- ko foreach: biomes --> <div class="div_build_item" data-bind="click: function () { $parent.addPlanet($data) }, event: { mouseover: function () { $parent.buildBarHover($data.toUpperCase() + ' TEMPLATE') }}"> <a href="#"> <img data-bind="attr: { src: '../shared/img/' + $data + '.png'}" class="img_build_unit" /> </a> </div> <!-- /ko --> Hope this is useful