Spec Defense is a thinking man's tower defense with strategy and puzzle-solving thrown in for a good mix. It's designed to be one thing and one thing only, an engaging tower defense experience with loads of strategic depth.

- unique maze like levels, each one is different
- multiple viable strategies to complete each level
- non-linear tech-tree, choose between unique new tower, upgrades or special perks
- unlock more tower and choose combination that fits your play-style/strategy
- challenging with lots of replayability
- endless mode for each level