The intricate lock-picking animation at the beginning.

The ad opens with a close-up of a hand picking a lock, with intricate gears and mechanisms visible. This transitions to a puzzle-like interface with wires and light bulbs, where a hand connects wires to light up bulbs in a sequence. The scene then shifts to a detective's desk with a magnifying glass, a pipe, a newspaper, and puzzle pieces forming a fingerprint. Finally, it shows a character resembling Sherlock Holmes in a foggy street with other figures in the background, leading to the game's title screen with a 'Play Free' button.