Hidden Dino Cats

Description
Hidden Dino Cats is a free, single-player, mouse-controlled hidden object/observation game.
The game consists of a single image, either black on white or white on black, showing a prehistoric scene. Into this drawing 100 cats have been inserted. These cats are of different sizes; some are just heads while others can be stretching or curled up, they can be in plain sight or partly hidden, full-on or in-profile, and though definitely feline they are not anatomically correct—artistic liberties have been taken.
The player can zoom in on an area of the image by rotating the mouse wheel while clicking and dragging moves the image. Clicking on a cat colours it in — the default colour is a kind of pink but there is an in-game option that changes this; it also increases the cat counter. When the main game has been completed the next level is unlocked, this is downloadable content for which the player must pay.
The game has an optional timer mode and a hint option.