Memory games
These games ask you to hold things in mind: where a tile was, which pair you saw, what came before. Rounds are short, so they fit into any break.
15 games
HoneycombWatch golden cells glow in a hive, then tap every one from memory
Echo MatchA 60-second n-back sprint: is this card the same as before?
Fresh PickEach round, pick one item from the market stall that you haven't picked yet
Laser MirrorsSee the mirrors for a moment, then predict where the laser beam exits
Town FolkMeet the neighbors on a little street, then recall each name, face and job
Mahjong PairsMatch free tiles two by two and clear 120 stacked boards
Letter WheelSwipe across a wheel of letters to fill a small crossword, 160 levels
Word OrderMemorize a numbered list of words, then rebuild it in the same order
Word ListStudy a list of words, then pick out every one you saw
CubesMemorize a pattern of colored squares, then pick it out from the look-alikes
Twin CardsRemember the playing cards, then turn them over two at a time to find pairs
FlagsName the country behind each flag before the timer runs out
CapitalsName the capital city, or the country it belongs to, before the timer ends
ArtName the painting or its artist, from the Mona Lisa to American Gothic
ChemistryA timed periodic table quiz, from element symbols to densities