Brain It On: Cat Dog is a brain-training game that offers hours of entertainment for players of all ages. Developed by Trang Nguyen Thi, this physics puzzle game is exclusively available on the iPhone platform.

The objective of the game is simple - draw lines or shapes to bump the pets and solve the puzzles. With each level, the difficulty increases, challenging your problem-solving skills and creativity. The game's addictive nature will keep you engaged for hours as you strive to clear each level.

One of the highlights of Brain It On: Cat Dog is the fun of collecting pens. As you progress through the game, you'll have the opportunity to unlock and collect various pens, adding an element of excitement and customization to your gameplay.

Additionally, Brain It On: Cat Dog allows you to share your high scores with friends, adding a competitive aspect to the game. With new levels being added every week, there's always something new to explore and conquer.

The best part? Brain It On: Cat Dog is completely free to play, allowing you to enjoy it anywhere, anytime. Challenge your brain, showcase your cleverness, and have a blast with Brain It On: Cat Dog!