Plain exploration costs nothing in this game where the main mechanic is clicking and zooming to find hidden items. You click and zoom hoping something pops out.
Click precisely and zoom to find hidden items, watching ads gives hints which adds waiting.
The controls are clicking and zooming in and out to find hidden items. The stated features are free exploration and tiny buttons hiding items and compressed images.
Most hidden objects are found by scanning each image carefully and switching zoom levels. Clicking multiple times in one spot increases chances of revealing a hidden item.
Q1 Controls: A: Clicking and zooming.
Q2 Objective: A: Find hidden items inside tiny buttons.
Q3 Stated Feature: A: Free exploration and compressed images.
Q4 Main Mechanic: A: Click and zoom.