The gameplay is simple. You just have to touch the screen to control the shield and slide your finger where you need it to go. Since the movement is completely free, you can go to any point on the screen to save your balloon. As your balloon continues rising higher and higher, the obstacles will get more complex and harder to avoid. You'll find all sorts of elements that will move all over the place at different speeds, so you can't take your eye off the screen for even a second if you want your balloon to make it out safe and sound.
Your score depends on how high your balloon makes it, so you need to make sure you protect it from everything so you can get the highest score possible. If you get tired of the free mode, Rise Up also offers a series of specific levels to put you to the test and where you have to pay as much attention to the screen as humanly possible.