Base Defense 2 requires dragging units onto highlighted tiles to deploy them. The physics can make precise placement annoying, but i found it works once you learn the flow.
Drag units onto highlighted tiles to deploy them, and tap a unit for upgrade options.
The main control is dragging units onto highlighted tiles to deploy them. Tapping a unit brings up upgrade options, and the physics affect precise placement.
Most players learn to be patient with the controls to get better. Drag units onto highlighted tiles to deploy them and tap for upgrades.
Q: What are the controls? A: Dragging units onto tiles and tapping them for options.
Q: What is the objective? A: Deploying units onto highlighted tiles.
Q: What is a stated feature? A: Upgrade options are available when tapping a unit.
Q: What is the main mechanic? A: Dragging units onto highlighted tiles to deploy them.