| International Scientific Units | 0 | - | 4.96 | 137,286 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 56,601 |
| Latin and Greek Word Roots | 0 | - | 4.47 | 57,485 |
| Elements of the Periodic Table Quiz | 0 | - | 5.00 | 1,922,705 |
| Elements by Symbol Quiz | 0 | - | 4.91 | 173,982 |
| Speed Symbol by Element | 0 | - | 4.89 | 90,238 |
| Noble Gases | 0 | - | 4.83 | 59,650 |
| Elements that are Gases at Room Temperature | 0 | - | 4.84 | 57,561 |
| Periodic Table Symbols Quiz | 0 | - | 4.97 | 51,346 |
| Elements with One-Letter Symbols | 0 | - | 4.82 | 70,718 |
| Medical Conditions Quiz | 0 | - | 4.84 | 115,297 |
| Name the Virus | 0 | - | 4.85 | 61,938 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,167 |
| Top World Languages | 0 | - | 4.91 | 705,299 |
| Major Taxonomic Ranks | 0 | - | 4.64 | 70,563 |
| Famous Scientists | 0 | - | 4.59 | 39,922 |
| Things Named For People #3 - Science | 0 | - | 4.82 | 47,975 |
| Elemental Words | 0 | - | 4.96 | 47,246 |
| Metals of Antiquity | 0 | - | 4.94 | 85,240 |
| Countries by Official Language | 0 | - | 4.95 | 154,627 |
| Places in their Native Language #1 | 0 | - | 4.86 | 210,102 |
| Places in their Native Language #2 | 0 | - | 4.88 | 112,765 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 248,324 |
| Countries in their Native Language | 0 | - | 4.98 | 177,753 |
| Official European Union Languages | 0 | - | 4.98 | 199,982 |
| European Countries in their Native Language | 0 | - | 4.99 | 143,711 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,789 |
| Top World Languages on a Map | 0 | - | 4.91 | 92,861 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 98,015 |
| Wikipedia Languages | 0 | - | 4.97 | 116,358 |
| Random Symbol to Element | 0 | - | 4.86 | 82,970 |
| Astronomy Quiz | 0 | - | 4.87 | 64,225 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 44,236 |
| Every Country in its Official/Native Language | 0 | - | 4.96 | 17,171 |
| All Wikipedia Languages | 0 | - | 4.92 | 19,369 |
| German-Speaking Countries | 0 | - | 4.88 | 117,405 |
| French Food Words | 0 | - | 4.82 | 174,388 |
| Scientific Names | 0 | - | 4.36 | 62,044 |
| Science Multiple Choice #1 | 0 | - | 4.54 | 79,719 |
| Chemical Elements with Short Names | 0 | - | 4.66 | 75,830 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.72 | 161,797 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.55 | 52,481 |
| Body Part Cliches | 0 | - | 4.42 | 119,092 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,006,598 |
| English Speaking Countries | 0 | - | 4.72 | 338,468 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 106,844 |
| Top World Languages A-Z | 0 | - | 4.84 | 31,376 |
| Most Spoken Languages in Canada | 0 | - | 4.82 | 46,856 |
| Category Elimination - Official Languages | 0 | - | 4.98 | 59,062 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.96 | 118,231 |
| Countries where Arabic is an Official Language | 0 | - | 4.84 | 52,001 |
| Body Parts in History and Culture | 0 | - | 4.48 | 32,747 |
| Science General Knowledge #1 | 0 | - | 4.65 | 138,111 |
| Science General Knowledge #2 | 0 | - | 4.45 | 96,652 |
| Science General Knowledge #3 | 0 | - | 4.57 | 87,827 |
| Science Vocabulary #2 | 0 | - | 4.49 | 54,283 |
| Simple Machines Quiz | 0 | - | 4.32 | 8,402 |
| Word Chain - Science | 0 | - | 4.65 | 50,054 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.60 | 34,398 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 33,063 |
| Most Common Elements in the Human Body | 0 | - | 4.72 | 139,479 |
| Lightest Chemical Elements A-Z | 0 | - | 4.56 | 30,855 |
| Environmental Issues | 0 | - | 4.52 | 25,324 |
| Count to 10 in Europe: Pro | 0 | - | 4.80 | 60,847 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.70 | 104,589 |
| First Names of Scientists | 0 | - | 4.47 | 52,223 |
| Groups of Two - Science | 0 | - | 4.31 | 46,009 |
| Science Vocabulary #1 | 0 | - | 4.36 | 65,961 |
| Science Vocabulary #3 | 0 | - | 4.31 | 47,794 |
| Science Decoder | 0 | - | 4.51 | 27,299 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.46 | 27,041 |
| Answers are Elements #2 | 0 | - | 4.41 | 52,212 |
| Elements by Picture | 0 | - | 4.29 | 63,388 |
| Periodic Table Elements A-Z | 0 | - | 4.79 | 85,146 |
| Name a Valid Element | 0 | - | 4.71 | 63,865 |
| Name the Constellations - With a Map | 0 | - | 4.90 | 31,154 |
| Medical Vocabulary | 0 | - | 4.53 | 53,264 |
| Slavic Languages | 0 | - | 4.58 | 48,652 |
| Translations of John | 0 | - | 4.41 | 23,985 |
| Spanish Animal Words | 0 | - | 4.52 | 88,953 |
| Italian Name Translation Quiz | 0 | - | 4.72 | 34,090 |
| Countries With the Most Italian Speakers | 0 | - | 4.51 | 50,580 |
| French-Speaking Countries Quiz | 0 | - | 4.76 | 212,587 |
| French Animal Words | 0 | - | 4.46 | 116,507 |
| Birthstones Quiz | 0 | - | 4.41 | 77,768 |
| "Ologies" Quiz | 0 | - | 4.34 | 90,118 |
| Albert Einstein Quiz | 0 | - | 4.54 | 17,303 |
| Fish... or Not a Fish? | 0 | - | 4.43 | 38,996 |
| Answers are Elements #1 | 0 | - | 4.32 | 50,787 |
| Most Guessed Elements on JetPunk | 0 | - | 4.55 | 46,633 |
| Planets By Picture Quiz | 0 | - | 4.55 | 48,367 |
| Body Part Words Quiz | 0 | - | 4.44 | 138,675 |
| Animal Anatomy Quiz | 0 | - | 4.38 | 57,828 |
| Word Scramble - Body Parts | 0 | - | 4.35 | 167,953 |
| Three Letter Body Parts Quiz | 0 | - | 4.39 | 198,826 |
| Human Body A-Z | 0 | - | 4.48 | 108,058 |
| One-Syllable Human Body Parts | 0 | - | 4.28 | 79,890 |
| Organs of the Human Body (with map) | 0 | - | 4.12 | 106,206 |
| Medical Specialties | 0 | - | 4.29 | 84,644 |
| Medical Acronyms | 0 | - | 4.40 | 88,136 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.66 | 42,337 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,418 |
| Spanish Name Translation | 0 | - | 4.15 | 160,378 |
| Spanish Food Words | 0 | - | 4.50 | 212,301 |
| Italian Food Words | 0 | - | 4.31 | 64,725 |
| Citrus Fruits | 0 | - | 3.58 | 40,639 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.79 | 65,725 |
| Category Elimination - Elements | 0 | - | 4.66 | 47,591 |
| Astronomy Decoder | 0 | - | 4.51 | 35,136 |
| The Mars Quiz | 0 | - | 4.52 | 17,371 |
| The Diseases They Had | 0 | - | 4.15 | 13,084 |
| Dumb it Down Doc | 0 | - | 4.13 | 61,910 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.25 | 18,384 |
| Official Languages of South Africa | 0 | - | 4.54 | 24,892 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 30,488 |
| Spanish Loan Words Quiz | 0 | - | 4.22 | 44,311 |
| TV Title Translation - Spanish | 0 | - | 4.08 | 11,113 |
| English Words of Italian Origin | 0 | - | 4.12 | 54,799 |
| French Phrases used in English | 0 | - | 4.20 | 44,535 |
| TV Title Translation - French | 0 | - | 4.21 | 24,670 |
| English Words of Russian Origin | 0 | - | 4.12 | 48,263 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 194,519 |
| Name the Constellations Quiz | 0 | - | 4.57 | 41,211 |
| Brightest Objects in the Sky | 0 | - | 4.37 | 16,349 |
| Astronomy True or False | 0 | - | 4.35 | 33,661 |
| Songs with Body Parts in the Title | 0 | - | 4.29 | 201,239 |
| Most Common Body Part Words | 0 | - | 3.92 | 29,879 |
| Body Parts - No Vowels | 0 | - | 4.13 | 21,831 |
| The Venus Quiz | 0 | - | 4.08 | 6,378 |
| Hebrew Letters Quiz | 0 | - | 4.37 | 12,639 |
| Language Origins of Popular First Names | 0 | - | 3.84 | 19,479 |
| Rhyme Time - Spanish | 0 | - | 4.13 | 13,292 |
| Elements Named for Countries | 0 | - | 4.49 | 18,961 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.46 | 13,736 |
| Animals by Skeleton Image | 0 | - | 4.79 | 38,251 |
| Countries with the Most HIV | 0 | - | 4.50 | 42,748 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 31,783 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.13 | 21,595 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 95,093 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.01 | 48,136 |
| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 48,072 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 32,230 |
| Top 10 Solar Power Countries | 0 | - | 4.77 | 56,660 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 23,591 |
| Worst Plastic Polluting Countries | 0 | - | 4.55 | 60,064 |
| Countries that Desalinate the Most Water | 0 | - | 4.79 | 36,713 |
| Countries with the Most Forest | 0 | - | 4.89 | 136,880 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.29 | 33,470 |
| Least-Forested Countries | 0 | - | 4.51 | 60,675 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.66 | 59,278 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 50,936 |
| Most Forested European Countries | 0 | - | 4.82 | 68,045 |
| Least Forested European Countries | 0 | - | 4.31 | 50,461 |
| Least Forested Countries in Asia | 0 | - | 4.79 | 60,438 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.58 | 35,324 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 34,992 |
| Tropical Rainforest Countries | 0 | - | 4.65 | 69,177 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.58 | 44,463 |
| Countries with Glaciers | 0 | - | 4.98 | 95,503 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 25,867 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,101 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,857 |
| Biggest Cities by Language | 0 | - | 4.95 | 213,644 |
| Random Translations Quiz #1 | 0 | - | 3.63 | 36,454 |
| Official Languages of the World | 0 | - | 4.99 | 332,898 |
| Capitals in their Native Languages | 0 | - | 4.95 | 127,426 |
| Random Name Translation | 0 | - | 4.51 | 39,329 |
| Random Translations Quiz #2 | 0 | - | 4.11 | 35,407 |
| Random Translations Quiz #3 | 0 | - | 3.93 | 31,601 |
| Random Translations Quiz #4 | 0 | - | 4.25 | 35,056 |
| Language Names in the Language | 0 | - | 4.90 | 138,378 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,306 |
| Most Commonly-Taught Languages in the U.S. | 0 | - | 4.38 | 58,488 |
| Languages of Spain | 0 | - | 4.34 | 21,296 |
| Official UN Languages | 0 | - | 4.92 | 106,409 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 602,609 |
| Official Languages Spoken in the Most Countries | 0 | - | 4.95 | 174,611 |
| Top Romance Languages | 0 | - | 4.40 | 34,513 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 185,488 |
| Officially Recognized Languages of India | 0 | - | 4.38 | 27,870 |
| Five Languages with the Most Native Speakers by Continent | 0 | - | 4.40 | 54,031 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.76 | 60,859 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.77 | 56,854 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.38 | 65,882 |
| World Language General Knowledge #2 | 0 | - | 4.95 | 76,120 |
| World Language General Knowledge #3 | 0 | - | 4.49 | 56,755 |
| Flags to Languages | 0 | - | 4.95 | 158,041 |
| Top Asian Languages on a Map | 0 | - | 4.93 | 60,498 |
| Top European Languages on a Map | 0 | - | 4.76 | 117,882 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.40 | 55,572 |
| World Language General Knowledge #1 | 0 | - | 4.76 | 64,128 |
| Top African Languages on a Map | 0 | - | 4.91 | 52,586 |
| Name an Official Language A-Z | 0 | - | 4.91 | 134,214 |
| World Languages A-Z | 0 | - | 4.94 | 68,972 |
| Languages Most Similar to English | 0 | - | 4.30 | 32,139 |
| Alphabets, Scripts, or Writing Systems | 0 | - | 4.97 | 27,011 |
| Count to 10 in Europe | 0 | - | 4.58 | 140,501 |
| Spanish Place Words | 0 | - | 4.49 | 73,158 |
| Movie Titles in Spanish | 0 | - | 4.34 | 57,078 |
| Spanish Place Names in English | 0 | - | 4.72 | 67,826 |
