| Name the Virus | 0 | - | 4.86 | 76,289 |
| Elements - Sudden Death | 0 | - | 4.91 | 126,394 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,168 |
| International Scientific Units | 0 | - | 4.95 | 155,484 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,287 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,379 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,222,268 |
| Elements by Symbol | 0 | - | 4.92 | 195,666 |
| Speed Symbol by Element | 0 | - | 4.91 | 103,721 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,510 |
| Noble Gases | 0 | - | 4.89 | 77,509 |
| Elements that are Gases at Room Temperature | 0 | - | 4.85 | 64,098 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,041 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 80,956 |
| Medical Vocabulary | 0 | - | 4.54 | 58,575 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 79,893 |
| Famous Scientists | 0 | - | 4.57 | 42,476 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.60 | 47,548 |
| Memory Test - Sudden Death | 0 | - | 4.91 | 330,645 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,626 |
| Elemental Words | 0 | - | 4.96 | 52,018 |
| Metals of Antiquity | 0 | - | 4.94 | 92,953 |
| Medical Specialties | 0 | - | 4.29 | 90,926 |
| The Diseases They Had | 0 | - | 4.15 | 13,890 |
| Olympic Host Countries - Sudden Death | 0 | - | 4.91 | 116,782 |
| True or False - Sudden Death | 0 | - | 4.93 | 148,524 |
| Countries that Use the Euro - Sudden Death | 0 | - | 4.93 | 244,069 |
| Be Happy - Sudden Death | 0 | - | 4.91 | 114,692 |
| Landlocked Countries - Sudden Death | 0 | - | 4.97 | 158,622 |
| Scientific Names | 0 | - | 4.32 | 78,194 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,671 |
| Famous Effects | 0 | - | 4.62 | 12,151 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,079 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,918 |
| Random Symbol to Element | 0 | - | 4.88 | 92,290 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.72 | 187,437 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,222 |
| Astronomy Quiz | 0 | - | 4.90 | 81,797 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,867 |
| Solar System Trivia | 0 | - | 4.93 | 46,093 |
| Body Part Cliches | 0 | - | 4.43 | 123,100 |
| Bones of the Human Body | 0 | - | 4.54 | 39,406 |
| Click the Planet | 0 | - | 4.96 | 90,328 |
| Capital Cities - Sudden Death | 0 | - | 4.99 | 269,191 |
| Countries With 100 Million People - Sudden Death | 0 | - | 4.96 | 159,597 |
| Countries With a Population Under 1 Million - Sudden Death | 0 | - | 4.93 | 83,300 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,069 |
| Click the Chemical Element | 0 | - | 4.96 | 79,363 |
| Name a Valid Answer - Science | 0 | - | 4.78 | 40,124 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,133 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,419 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,016 |
| Science General Knowledge #1 | 0 | - | 4.54 | 163,651 |
| Science General Knowledge #2 | 0 | - | 4.48 | 116,943 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,314 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,288 |
| Word Chain - Science | 0 | - | 4.59 | 54,426 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,359 |
| Science Multiple Choice #3 | 0 | - | 4.38 | 34,401 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 150,848 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,091,262 |
| Environmental Issues | 0 | - | 4.54 | 26,734 |
| Arrow Puzzle #1 - Sudden Death | 0 | - | 4.81 | 105,009 |
| Prime Numbers - Sudden Death | 0 | - | 4.62 | 96,841 |
| Be Sad - Sudden Death | 0 | - | 4.74 | 75,536 |
| Equatorial Countries - Sudden Death | 0 | - | 4.74 | 58,296 |
| Ivy League Universities - Sudden Death | 0 | - | 4.74 | 50,520 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,676 |
| The Sun Quiz | 0 | - | 4.93 | 34,160 |
| First Names of Scientists | 0 | - | 4.50 | 56,493 |
| Groups of Two - Science | 0 | - | 4.26 | 48,151 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,415 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,683 |
| Science Decoder | 0 | - | 4.52 | 28,657 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,172 |
| Animals - Taxonomy to Common Name | 0 | - | 4.79 | 28,110 |
| Science True or False | 0 | - | 4.35 | 40,006 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,840 |
| Elements by Picture | 0 | - | 4.28 | 69,582 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 102,255 |
| Name a Valid Element | 0 | - | 4.64 | 69,604 |
| Medical Acronyms | 0 | - | 4.43 | 96,221 |
| Spielberg Movie Images - Sudden Death | 0 | - | 4.46 | 53,221 |
| Real People - Sudden Death #1 | 0 | - | 4.12 | 104,728 |
| Birds - Sudden Death | 0 | - | 4.53 | 66,838 |
| Tom Hanks Movies - Sudden Death | 0 | - | 4.59 | 62,520 |
| Most Populated Countries - Sudden Death | 0 | - | 4.65 | 63,845 |
| NBA Champion Players - Sudden Death | 0 | - | 4.56 | 124,253 |
| Birthstones by Month | 0 | - | 4.41 | 80,497 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,411 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,317 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,339 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,710 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,100 |
| Element... or Pokémon? | 0 | - | 4.98 | 130,336 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 27,800 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,244 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,183 |
| Body Part Words | 0 | - | 4.43 | 145,274 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,679 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 175,854 |
| Three Letter Body Parts | 0 | - | 4.40 | 204,964 |
| Human Body A-Z | 0 | - | 4.51 | 128,488 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,762 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,533 |
| Christmas Songs - Sudden Death | 0 | - | 4.24 | 49,058 |
| The Pluto Quiz | 0 | - | 4.60 | 9,786 |
| Citrus Fruits | 0 | - | 3.65 | 41,958 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,219 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.78 | 70,337 |
| Category Elimination - Elements | 0 | - | 4.62 | 53,265 |
| Astronomy Decoder | 0 | - | 4.50 | 37,864 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,398 |
| The Mars Quiz | 0 | - | 4.55 | 18,583 |
| The Saturn Quiz | 0 | - | 4.54 | 11,508 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,650 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 223,749 |
| Name the Constellations | 0 | - | 4.58 | 44,702 |
| Astronomy True or False | 0 | - | 4.38 | 36,282 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 214,959 |
| Most Common Body Part Words | 0 | - | 3.88 | 31,538 |
| Body Parts - No Vowels | 0 | - | 4.15 | 25,106 |
| The Venus Quiz | 0 | - | 4.21 | 6,892 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,044 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,073 |
| Elements Named for Countries | 0 | - | 4.52 | 24,423 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,633 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,026 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,365 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,322 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,901 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.12 | 22,767 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,551 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,110 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,268 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,470 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,796 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,691 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,110 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,390 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,674 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,459 |
| Least-Forested Countries | 0 | - | 4.53 | 64,923 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,201 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,211 |
| Most Forested European Countries | 0 | - | 4.80 | 74,954 |
| Least Forested European Countries | 0 | - | 4.25 | 53,797 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,454 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,691 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,340 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,738 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,455 |
| Countries with Glaciers | 0 | - | 4.97 | 104,693 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,074 |
| Italian Cities - Sudden Death | 0 | - | 4.96 | 68,430 |
| U.S. National Parks – Sudden Death | 0 | - | 4.62 | 42,810 |
| Republican U.S. Presidents - Sudden Death | 0 | - | 4.80 | 45,143 |
| 1990s Movies - Sudden Death | 0 | - | 4.73 | 29,625 |
| Countries With High Population Density - Sudden Death | 0 | - | 4.92 | 36,411 |
| Canadian Cities - Sudden Death | 0 | - | 4.96 | 45,749 |
| Countries With Low Population Density - Sudden Death | 0 | - | 4.65 | 21,530 |
| Cities of California - Sudden Death | 0 | - | 4.58 | 35,370 |
| 1980s Movies - Sudden Death | 0 | - | 4.61 | 23,362 |
| Formula 1 Drivers - Sudden Death | 0 | - | 4.41 | 21,254 |
| Super Bowl Winners - Sudden Death | 0 | - | 4.53 | 37,433 |
| Every European Flag - Sudden Death | 0 | - | 4.95 | 374,030 |
| Every American Flag - Sudden Death | 0 | - | 4.88 | 66,988 |
| Every African Flag - Sudden Death | 0 | - | 4.97 | 70,765 |
| Smallest 25 U.S. States - Sudden Death | 0 | - | 4.56 | 144,711 |
| NATO Members - Sudden Death | 0 | - | 4.94 | 145,687 |
| Modern Rappers - Sudden Death | 0 | - | 4.31 | 120,443 |
| U.S. Presidents - Sudden Death | 0 | - | 4.78 | 169,721 |
| Summer Olympics Host Cities - Sudden Death | 0 | - | 4.96 | 41,457 |
| Star Wars Picture Chain - Sudden Death | 0 | - | 4.51 | 95,928 |
| Michael Jackson Songs - Sudden Death | 0 | - | 4.67 | 89,046 |
| 13 American Colonies - Sudden Death | 0 | - | 4.89 | 42,059 |
| Red, White, & Blue Flags - Sudden Death | 0 | - | 4.70 | 182,096 |
| British Bands - Sudden Death | 0 | - | 4.60 | 93,232 |
| European Capitals - Sudden Death | 0 | - | 4.93 | 207,666 |
| Queen Songs - Sudden Death | 0 | - | 4.81 | 53,067 |
| ABBA Songs - Sudden Death | 0 | - | 4.64 | 43,422 |
| "C" Countries - World Map Sudden Death | 0 | - | 4.86 | 186,844 |
| Megacities - World Map Sudden Death | 0 | - | 4.92 | 143,522 |
| Blue States - Sudden Death | 0 | - | 4.97 | 85,826 |
| U.S. State Capitals - Sudden Death | 0 | - | 4.78 | 127,433 |
| China's Neighbours - Sudden Death | 0 | - | 4.70 | 141,850 |
| Shakespeare Plays - Sudden Death | 0 | - | 4.85 | 58,282 |
| NBA MVPs - Sudden Death | 0 | - | 4.52 | 117,817 |
| American Singers – Sudden Death | 0 | - | 4.50 | 79,105 |
| NATO Phonetic Alphabet - Sudden Death | 0 | - | 4.93 | 130,447 |
| American Bands - Sudden Death | 0 | - | 4.50 | 69,650 |
| Eliminate European Cities - Sudden Death | 0 | - | 4.95 | 93,124 |
| Musical Movies - Sudden Death | 0 | - | 3.95 | 68,702 |
| Two Color Flags - Sudden Death | 0 | - | 4.96 | 95,117 |
| Indo-European Languages - Sudden Death | 0 | - | 4.68 | 31,644 |
| Countries With Same-Sex Marriage – Sudden Death | 0 | - | 4.25 | 69,613 |
| Muslim Countries - Sudden Death | 0 | - | 4.93 | 144,978 |
| K-Pop Groups - Sudden Death | 0 | - | 4.21 | 43,065 |
| North American Pro Sports Teams – Sudden Death | 0 | - | 4.55 | 52,814 |
| NBA Cities - Sudden Death | 0 | - | 4.75 | 58,453 |
