Use the arrow keys to move, money can be gained by completing levels. Use the money in the shop to buy perks. You have three lives, unlike a cat, which has nine lives. Don't touch the red! It will deplete a life. Touching the purple door will allow you to move on a level. There is also a blue patterned door in the final two levels. This door will teleport you to the end of the level, allowing you to move on. Enjoy!
A friend of mine prompted me to make the shop with money. My teacher asked me to add hearts. So... thank you to them! If you are them, then you know who you are!