Table S1.

Brief description of each game title in our system

Game title	Description
Submarine Hunter	Submarines show up randomly under the water. A player can control a warship’s position horizontally to throw bombs to destroy them.
Trebuchet	Carts appear randomly in the desert. A player can adjust the projection power of the trebuchet to propel a stone to attack them at distinct distances.
Treasure Chest	The secret code of a single-dial lock to open a treasure chest is shown at the top of the screen. A player can turn the dial clockwise/counterclockwise to the appropriate spots to open the box.
Cockroach Buster	Cockroaches show up on the left of the screen. A player can guide a little girl vertically to throw her slipper to smash them.
Cupid’s Arrow	Bend Cupid’s bow and point at hearts in the sky. A player can adjust the bow to an appropriate angle of attack and release the string to shoot the hearts.
Match Two	Twelve cards with six pairs of fruit are shown and covered rapidly. A player has to memorize the locations of them. The player then has to rotate the shoulder wheel to move to the appropriate locations and flip two cards consecutively to see if there is a match.