| International Scientific Units | 0 | - | 4.95 | 158,400 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 63,356 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,261,713 |
| Elements by Symbol | 0 | - | 4.92 | 198,817 |
| Speed Symbol by Element | 0 | - | 4.90 | 105,631 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,823 |
| Noble Gases | 0 | - | 4.89 | 78,873 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 65,111 |
| Periodic Table Symbols | 0 | - | 4.97 | 80,883 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 82,461 |
| Name the Virus | 0 | - | 4.87 | 77,139 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 81,165 |
| Famous Scientists | 0 | - | 4.58 | 42,861 |
| Flowers by Picture | 0 | - | 4.46 | 105,878 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,300 |
| Elemental Words | 0 | - | 4.97 | 52,575 |
| Metals of Antiquity | 0 | - | 4.95 | 93,960 |
| Megadiverse Countries | 0 | - | 4.96 | 141,151 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,160 |
| Plants by Picture | 0 | - | 4.24 | 14,526 |
| Scientific Names | 0 | - | 4.32 | 78,741 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,768 |
| Trees in the Answer | 0 | - | 4.23 | 45,941 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,999 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,101 |
| Random Symbol to Element | 0 | - | 4.88 | 94,088 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 189,811 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,848 |
| Astronomy Quiz | 0 | - | 4.90 | 83,338 |
| Body Part Cliches | 0 | - | 4.44 | 123,674 |
| Bones of the Human Body | 0 | - | 4.51 | 43,630 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,935 |
| Animal Varieties #1 | 0 | - | 4.48 | 93,400 |
| A Whale of a Quiz | 0 | - | 4.41 | 36,167 |
| Animal Varieties #3 | 0 | - | 4.50 | 55,665 |
| Animal Stereotypes | 0 | - | 4.48 | 37,520 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,128 |
| Countries with Fjords | 0 | - | 4.94 | 101,423 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,915 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,721 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,163 |
| World's Longest Rivers | 0 | - | 4.89 | 137,668 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,625 |
| 3 and 4 Letter Trees | 0 | - | 4.21 | 17,320 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,451 |
| Science General Knowledge #1 | 0 | - | 4.54 | 167,415 |
| Science General Knowledge #2 | 0 | - | 4.48 | 119,709 |
| Science General Knowledge #3 | 0 | - | 4.56 | 109,631 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,982 |
| Word Chain - Science | 0 | - | 4.59 | 55,170 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,967 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,769 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,515 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,102,822 |
| Environmental Issues | 0 | - | 4.54 | 26,914 |
| Animal Varieties #2 | 0 | - | 4.40 | 66,944 |
| Types of Bears | 0 | - | 4.50 | 143,954 |
| Deadly Animals | 0 | - | 4.02 | 110,824 |
| Famous Animals #1 | 0 | - | 4.03 | 240,000 |
| Famous Animals #2 | 0 | - | 4.02 | 57,596 |
| Famous Animals Quiz #3 | 0 | - | 4.24 | 43,423 |
| Animal Facts | 0 | - | 4.15 | 43,047 |
| Cat Knowledge | 0 | - | 4.49 | 25,883 |
| Bear Knowledge | 0 | - | 4.54 | 35,174 |
| Cow Knowledge | 0 | - | 4.46 | 24,315 |
| Elephant Knowledge | 0 | - | 4.41 | 24,011 |
| Multiple Choice Animal Quiz #1 | 0 | - | 4.50 | 56,367 |
| Human Taxonomy | 0 | - | 4.70 | 18,996 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,894 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,234 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,369 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,915 |
| Countries With No Rivers | 0 | - | 4.96 | 77,186 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,061 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,191 |
| North Sea Countries | 0 | - | 4.92 | 87,728 |
| Black Sea Countries | 0 | - | 4.87 | 60,762 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,613 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,705 |
| Seas on the World Map | 0 | - | 4.96 | 136,019 |
| Seas of the World | 0 | - | 5.00 | 158,604 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,389 |
| First Names of Scientists | 0 | - | 4.51 | 57,237 |
| Groups of Two - Science | 0 | - | 4.26 | 48,472 |
| Science Vocabulary #1 | 0 | - | 4.34 | 72,211 |
| Science Vocabulary #3 | 0 | - | 4.31 | 52,247 |
| Science Decoder | 0 | - | 4.52 | 28,862 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,522 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,212 |
| Elements by Picture | 0 | - | 4.27 | 70,340 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 103,532 |
| Name a Valid Element | 0 | - | 4.68 | 70,427 |
| Medical Acronyms | 0 | - | 4.43 | 97,282 |
| Medical Vocabulary | 0 | - | 4.54 | 59,502 |
| French Animal Words | 0 | - | 4.44 | 135,017 |
| Spanish Animal Words | 0 | - | 4.53 | 95,991 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,629 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,498 |
| Name that Bug | 0 | - | 4.12 | 45,646 |
| Pack Animals | 0 | - | 4.20 | 10,442 |
| Lion Trivia | 0 | - | 4.19 | 16,443 |
| Mammal Knowledge #1 | 0 | - | 4.20 | 19,730 |
| Mammal Knowledge #2 | 0 | - | 4.13 | 18,576 |
| Insect Knowledge #1 | 0 | - | 4.38 | 12,456 |
| Insect Knowledge #2 | 0 | - | 4.22 | 9,014 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,832 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,396 |
| Bird in the Answers | 0 | - | 4.11 | 33,979 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,247 |
| Horse Knowledge | 0 | - | 4.46 | 24,139 |
| Snake Knowledge | 0 | - | 4.49 | 18,880 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,661 |
| Geologic Time Scale | 0 | - | 4.41 | 10,071 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,028 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,169 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,020 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,841 |
| Birthstones by Month | 0 | - | 4.44 | 88,168 |
| "Ologies" Quiz | 0 | - | 4.34 | 97,581 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,479 |
| Name the Metal Alloy | 0 | - | 4.73 | 14,073 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,978 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,333 |
| Brightest Natural Objects in the Sky | 0 | - | 4.46 | 28,648 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,424 |
| Body Part Words | 0 | - | 4.43 | 146,418 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,961 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 177,108 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,923 |
| Human Body A-Z | 0 | - | 4.51 | 130,078 |
| One-Syllable Human Body Parts | 0 | - | 4.30 | 88,559 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,954 |
| Medical Specialties | 0 | - | 4.33 | 92,334 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,265 |
| Animals: No Vowels #2 | 0 | - | 4.51 | 22,808 |
| Animals that Start with L | 0 | - | 4.47 | 102,467 |
| Animals that Start with P | 0 | - | 4.45 | 86,494 |
| Animals that Start with S | 0 | - | 4.49 | 87,689 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,853 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,318 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,291 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,733 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,946 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,677 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,785 |
| Famous Rivers | 0 | - | 4.75 | 105,269 |
| City to River #1 | 0 | - | 4.59 | 35,905 |
| Most Populous River Basins | 0 | - | 4.55 | 39,821 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,495 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,134 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,278 |
| Citrus Fruits | 0 | - | 3.67 | 42,206 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,979 |
| Category Elimination - Elements | 0 | - | 4.61 | 54,140 |
| Astronomy Decoder | 0 | - | 4.48 | 38,238 |
| The Mars Quiz | 0 | - | 4.55 | 18,740 |
| The Saturn Quiz | 0 | - | 4.54 | 11,598 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,832 |
| The Diseases They Had | 0 | - | 4.15 | 14,074 |
| Dumb it Down Doc | 0 | - | 4.13 | 65,194 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,966 |
| Fictional Animals #1 | 0 | - | 4.06 | 46,474 |
| Words that are Animals | 0 | - | 3.85 | 41,517 |
| Extinct Animals | 0 | - | 4.13 | 27,584 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,934 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,536 |
| Primate Knowledge | 0 | - | 4.17 | 15,351 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,387 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,314 |
| Animals in the News | 0 | - | 4.37 | 26,841 |
| Multiple Choice Animal Quiz #2 | 0 | - | 4.21 | 15,516 |
| Largest Types of Birds | 0 | - | 4.19 | 27,026 |
| Bird Knowledge #1 | 0 | - | 4.33 | 15,784 |
| Fish Knowledge | 0 | - | 4.38 | 25,754 |
| Animals that Start with A | 0 | - | 4.26 | 112,464 |
| Animals that Start with B | 0 | - | 4.31 | 114,172 |
| Animals that Start with C | 0 | - | 4.21 | 93,559 |
| Animals that Start with D | 0 | - | 4.25 | 87,290 |
| Animals that Start with E | 0 | - | 4.28 | 74,198 |
| Animals that Start with F | 0 | - | 4.28 | 107,473 |
| Animals that Start with G | 0 | - | 4.25 | 80,412 |
| Animals that Start with K | 0 | - | 4.07 | 66,759 |
| Animals that Start with M | 0 | - | 4.23 | 84,300 |
| Animals that Start with R | 0 | - | 4.28 | 87,688 |
| Animals that Start with T | 0 | - | 4.32 | 92,138 |
| Animals that Start with H | 0 | - | 4.31 | 86,592 |
| Animals that Start with O | 0 | - | 4.27 | 88,841 |
| Animals that Start with W | 0 | - | 4.36 | 47,385 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,035 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,420 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,079 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,746 |
| Rivers by City | 0 | - | 4.38 | 31,781 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,242 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,092 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,214 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,386 |
| Signs of the Zodiac Quiz | 0 | - | 4.46 | 227,808 |
| Name the Constellations | 0 | - | 4.63 | 48,283 |
| Astronomy True or False | 0 | - | 4.39 | 36,618 |
