![]() This isn’t unique to Vector TD many games in the genre include earned interest, and some also allow you to upgrade your interest rate. Even more importantly, the player is given the choice to allocate scarce bonus points into increasing the interest rate. If players are stingy and can hoard cash between waves, they earn some amount of interest between waves. However, Vector TD stands out to me as a potential stealth-math-lesson for another reason: compound interest. Math also comes into play, usually at an intuitive level, for deciding which towers will give them the most bang for their buck. Or if you want the primer, here’s a short playthrough video of a few rounds.Ĭlearly, math is key when designing and balancing the gameplay for a game like this. If you have time, try to beat all 50 waves on an easy map if you’re impatient, at least play for 10 rounds. The challenge comes from deciding what to build, where to place it, and (most importantly for our purposes) when to buy it.īefore I spoil things any further, go play it. Your job is to build towers that shoot the waves of bad guys down before they get to their destination. The games consist of a map with some kind of a path from start to finish that the bad guys will try to cross. The TD gameplay is an exercise in resource management. The first tower-defense gameplay was created by people making custom maps for real-time strategy games like Starcraft. Quick intro: Tower defense games are popular in the free web-game space, where they made their big debut as standalone games. However, a few specific design features make it stand out as a potential math lesson waiting to happen. Vector TD is a stylish but standard entry into the tower defense genre of videogames. He recently transitioned to teaching from a software development career where he worked primarily in game development. Today we have a guest blogger, Josh Giesbrecht, a high school math and information technology teacher in Abbotsford, BC, Canada.
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