Understanding the fundamental differences between these two styles of play will help you find the right game for your taste.

However, over the years, they have diverged into two completely separate evolutionary branches of gaming.
The Old-School Formula
Traditional defense games are almost exclusively single-player experiences focused on surviving against AI-controlled hordes.

The challenge comes from optimizing your maze of turrets and managing upgrades as the waves become progressively harder.
Almost always single-player.You wait for the enemies to come to you.Matches can last for hours. The Modern Tower Rush
You are actively deploying mobile troops that march down lanes while also managing your own defensive structures.

There is no pausing, no endless waves, and every single deployment decision has immediate, potentially game-ending consequences.
MechanicDefense GenreTower RushMain GoalSurvive all waves without losing livesDestroy the enemy player's main basePlayer ActionPlacing and upgrading static turretsManaging a deck of cards Finding Your Preference
If you crave adrenaline, competitive ladder climbing, and testing your wits against real humans, the modern arena is for you.

The evolution from static defense to dynamic rushing proves that strategy games are constantly reinventing themselves.