I'd say my favorite of all time is still probably Defense Grid. More recent releases I've enjoyed are No Creeps Were Harmed (love the level and tower design) and Emberward (still early access, but really neat concept for a roguelite tower defense game).

same question as the one below me

Hey Kazanski, What would be the best tower defense you have played?

Hey Kazanski, i sent you an invite because I like your reviews and taste in games.

yo, i cant believe people find octopath traveller 2 combat to be interesting, how do they manage to enjoy something so monotone?

Hey man, thanks for the free-subscription. I appreciate you.