Tired of saving the boring old realm or your boring old castle in your spare time? Expand your defense capabilities by saving your computer from possible threats instead, in Install-D, a slick tower defense game by Colin Towle and John Axon. You get to place towers wherever you like, and if (like me) you spent hours and hours of your life on Desktop Tower Defense, you'll already be an expert at building an effective maze out of your towers. Click (or use indicated keyboard shortcuts) to chose which tower you'd like to build, then click on the board to place it. Dotted lines indicate the path the threats will take, and how their movement will change with your placement. The goal is to keep them from reaching the data center.
As you progress you earn stars and memory space, which allow you to purchase upgraded programs with new abilities for your towers, as well as unlock bonus stages. Stars are awarded according to how many points you earn, and you can always go back to previous levels to try to up your score by sending waves in early. Once you have more than six tower types, you'll have to choose carefully which ones to bring into battle. Take note of what creeps will be appearing in the round, and the cost to build specific towers before choosing your final arsenal. Certain towers are better in certain situations, and if you only bring the highest tier towers to battle, you may not be able to afford what you need.
Make no mistake, Install_D will put your strategy skills through the gauntlet and back again. It's very challenging to get all the stars on each level. Deciding which upgraded towers are needed for each map is key, and it may take you several tries before you find the perfect mix of towers to destroy the glitches before they destroy you. There are over 40 maps and you can eventually unlock 30 tower types, which will keep you enjoying the vector graphics and demanding gameplay for many hours.