The two planets in our solar system that are tilted on their axis and experience seasons are:

* Earth: Earth is tilted at approximately 23.5 degrees, which is the primary reason we have seasons.

* Mars: Mars has an axial tilt of about 25 degrees, which is slightly greater than Earth's. This tilt leads to distinct seasons on Mars, though they are more extreme than on Earth due to Mars' greater distance from the Sun.