Playing tower defence is a lot like planning a holiday for someone you hate. Start their day with a sticky honey massage, then a beekeeping demonstration, followed by wrestling, and finally bring the children back from the funfair. Every TD has this core of arranging a terrible stroll of damage types and status effects, but many dabble in mazing too--building obstacles to making routes twist round and double back, sending the tour bus past that landfill as many times as possible.
This usually involves plonking down the cheapest tower simply to fill space or a plain wall block, which are no fun at all. Continuing to look like one of the most polished TDs, Defense Grid 2 has shown off a fancy multipurpose mazing block and oh, the aliens' holiday will be awful.
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