One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.

The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
What is the correct path taken by air when entering the body during inhalation?
What action does the diaphragm muscle perform when a person breathes in?
How do the ribs move when a person breathes out (exhalation)?
How do the ribs move when a person breathes in (inhalation)?
What happens to the diaphragm muscle during exhalation?
Which bony structure protects the organs of the respiratory system in the chest?
Which gas moves from the air inside the lungs directly into the blood vessels?
Which gas is carried back by the blood to the lungs to be exhaled out?
What change occurs to the volume/size of the chest cavity during inhalation?
What change occurs to the size of the chest cavity during exhalation?
In a plastic bottle model of breathing, what part of the human body does the bottle represent?
In the plastic bottle breathing model, what organs are represented by the balloon inside?
In a breathing model, what component is represented by the elastic sheet stretched across the cut bottom?
In the plastic bottle model of breathing, what body part is represented by the straw inserted in the neck?
Pulling down on the bottom balloon/sheet of a bottle model causes the inner balloon to:
What happens to the inner balloon when the stretched bottom membrane is released or pushed upward?
Which part of human chest mechanics involved in breathing is NOT shown by a rigid plastic bottle model?
What does the term 'breathing rate' measure?
How does strenuous physical exercise affect a person's breathing rate?
Why does the human body require an increased breathing rate during physical activity?
What general relationship is observed between breathing rate and pulse rate during exercise?
Why are human lungs often described as being like 'stretchy sponges'?
What path does carbon dioxide follow as it is excreted from body tissues?
What is the primary function of blood in the respiratory system?
What happens to a person's breathing rate after they stop exercising and rest?
Blowing up a rubber balloon with a single exhalation demonstrates that:
In an investigation testing how exercise affects breathing rate, what is the independent variable?
Which safety precaution must be taken when constructing a plastic bottle breathing model?
What causes outside atmospheric air to flow into the lungs during inhalation?
Approximately how many times per minute does a human take a breath while at rest?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.

Pick a tile, answer, hit bonuses and steals.