Mind Games: Math Crosswords

Mind Games: Math Crosswords is a game to improve your math skills. It is a great way to spend your time.
The player's mission is to save the planet from extinction. The aliens have destroyed all the plants on the planet. However, humans have found a solution. Engineers have built ships that convert brain activity into life-giving energy to grow plants. By solving mathematical problems, you are contributing to the restoration of plants and the regeneration of our planet.

How to play:
1. Fill in all the empty spaces with candidate numbers to make the equations right.
2. Start with examples with one unknown number.
3. Use the hints to complete the level if you get stuck.
4. You win if all the equations are right.