| Elements - Sudden Death | 0 | - | 4.91 | 126,710 |
| International Scientific Units | 0 | - | 4.95 | 155,582 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,316 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,223,543 |
| Elements by Symbol | 0 | - | 4.92 | 195,776 |
| Speed Symbol by Element | 0 | - | 4.91 | 103,777 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,551 |
| Noble Gases | 0 | - | 4.89 | 77,548 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,126 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,108 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 80,998 |
| Name the Virus | 0 | - | 4.86 | 76,353 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 79,925 |
| Famous Scientists | 0 | - | 4.57 | 42,491 |
| Memory Test - Sudden Death | 0 | - | 4.91 | 331,218 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,650 |
| Elemental Words | 0 | - | 4.96 | 52,033 |
| Metals of Antiquity | 0 | - | 4.94 | 92,984 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,664 |
| Olympic Host Countries - Sudden Death | 0 | - | 4.91 | 116,935 |
| True or False - Sudden Death | 0 | - | 4.93 | 148,790 |
| Arrow Puzzle #1 - Sudden Death | 0 | - | 4.81 | 105,141 |
| Countries that Use the Euro - Sudden Death | 0 | - | 4.93 | 244,381 |
| Be Happy - Sudden Death | 0 | - | 4.91 | 114,899 |
| Landlocked Countries - Sudden Death | 0 | - | 4.97 | 158,934 |
| Scientific Names | 0 | - | 4.32 | 78,210 |
| Famous Effects | 0 | - | 4.62 | 12,169 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,107 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,922 |
| Random Symbol to Element | 0 | - | 4.88 | 92,332 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.72 | 187,495 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,236 |
| Astronomy Quiz | 0 | - | 4.90 | 81,856 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,932 |
| Solar System Trivia | 0 | - | 4.93 | 46,130 |
| Body Part Cliches | 0 | - | 4.43 | 123,118 |
| Bones of the Human Body | 0 | - | 4.52 | 40,220 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,290 |
| Click the Planet | 0 | - | 4.96 | 90,373 |
| Capital Cities - Sudden Death | 0 | - | 4.99 | 269,692 |
| Countries With 100 Million People - Sudden Death | 0 | - | 4.96 | 159,923 |
| Countries With a Population Under 1 Million - Sudden Death | 0 | - | 4.93 | 83,428 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,071 |
| Click the Chemical Element | 0 | - | 4.96 | 79,407 |
| Name a Valid Answer - Science | 0 | - | 4.78 | 40,170 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,152 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,428 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,022 |
| Science General Knowledge #1 | 0 | - | 4.54 | 163,751 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,008 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,415 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,316 |
| Word Chain - Science | 0 | - | 4.59 | 54,444 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,426 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,371 |
| Science Multiple Choice #3 | 0 | - | 4.38 | 34,419 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 150,910 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,091,641 |
| Environmental Issues | 0 | - | 4.54 | 26,741 |
| Prime Numbers - Sudden Death | 0 | - | 4.62 | 96,917 |
| Be Sad - Sudden Death | 0 | - | 4.74 | 75,596 |
| Equatorial Countries - Sudden Death | 0 | - | 4.74 | 58,349 |
| Ivy League Universities - Sudden Death | 0 | - | 4.74 | 50,588 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,693 |
| The Sun Quiz | 0 | - | 4.93 | 34,186 |
| First Names of Scientists | 0 | - | 4.50 | 56,525 |
| Groups of Two - Science | 0 | - | 4.26 | 48,161 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,450 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,701 |
| Science Decoder | 0 | - | 4.52 | 28,664 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,175 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,121 |
| Science True or False | 0 | - | 4.35 | 40,021 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,846 |
| Elements by Picture | 0 | - | 4.28 | 69,612 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 102,291 |
| Name a Valid Element | 0 | - | 4.64 | 69,636 |
| Medical Acronyms | 0 | - | 4.43 | 96,318 |
| Medical Vocabulary | 0 | - | 4.54 | 58,661 |
| Spielberg Movie Images - Sudden Death | 0 | - | 4.46 | 53,287 |
| Real People - Sudden Death #1 | 0 | - | 4.13 | 104,828 |
| Birds - Sudden Death | 0 | - | 4.53 | 66,910 |
| Tom Hanks Movies - Sudden Death | 0 | - | 4.59 | 62,595 |
| Most Populated Countries - Sudden Death | 0 | - | 4.65 | 66,141 |
| NBA Champion Players - Sudden Death | 0 | - | 4.56 | 124,425 |
| Birthstones by Month | 0 | - | 4.41 | 80,508 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,429 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,324 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,370 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,712 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,106 |
| Element... or Pokémon? | 0 | - | 4.98 | 130,426 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 27,842 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,281 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,213 |
| Body Part Words | 0 | - | 4.43 | 145,339 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,696 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 175,889 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,087 |
| Human Body A-Z | 0 | - | 4.51 | 128,600 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,810 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,597 |
| Medical Specialties | 0 | - | 4.29 | 90,996 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.64 | 53,288 |
| Christmas Songs - Sudden Death | 0 | - | 4.23 | 49,123 |
| The Pluto Quiz | 0 | - | 4.60 | 9,790 |
| Citrus Fruits | 0 | - | 3.63 | 41,966 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,239 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,356 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,292 |
| Astronomy Decoder | 0 | - | 4.50 | 37,874 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,401 |
| The Mars Quiz | 0 | - | 4.55 | 18,586 |
| The Saturn Quiz | 0 | - | 4.54 | 11,513 |
| The Diseases They Had | 0 | - | 4.15 | 13,909 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,728 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 223,889 |
| Name the Constellations | 0 | - | 4.58 | 44,716 |
| Astronomy True or False | 0 | - | 4.38 | 36,290 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,002 |
| Most Common Body Part Words | 0 | - | 3.88 | 31,553 |
| Body Parts - No Vowels | 0 | - | 4.15 | 25,119 |
| The Venus Quiz | 0 | - | 4.21 | 6,894 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,059 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,096 |
| Elements Named for Countries | 0 | - | 4.52 | 24,441 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,647 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,050 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,377 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,337 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,937 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.12 | 22,776 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,559 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,117 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,287 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,481 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,808 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,700 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,141 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,399 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,703 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,468 |
| Least-Forested Countries | 0 | - | 4.53 | 64,938 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,221 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,224 |
| Most Forested European Countries | 0 | - | 4.80 | 74,968 |
| Least Forested European Countries | 0 | - | 4.25 | 53,814 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,473 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,700 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,349 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,766 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,464 |
| Countries with Glaciers | 0 | - | 4.97 | 104,722 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,084 |
| Italian Cities - Sudden Death | 0 | - | 4.96 | 68,668 |
| U.S. National Parks – Sudden Death | 0 | - | 4.62 | 42,899 |
| Republican U.S. Presidents - Sudden Death | 0 | - | 4.80 | 45,273 |
| 1990s Movies - Sudden Death | 0 | - | 4.73 | 29,668 |
| Countries With High Population Density - Sudden Death | 0 | - | 4.92 | 36,488 |
| Canadian Cities - Sudden Death | 0 | - | 4.96 | 45,914 |
| Countries With Low Population Density - Sudden Death | 0 | - | 4.65 | 21,571 |
| Cities of California - Sudden Death | 0 | - | 4.58 | 35,432 |
| 1980s Movies - Sudden Death | 0 | - | 4.61 | 23,407 |
| Formula 1 Drivers - Sudden Death | 0 | - | 4.41 | 21,395 |
| Super Bowl Winners - Sudden Death | 0 | - | 4.53 | 37,472 |
| Every European Flag - Sudden Death | 0 | - | 4.96 | 374,676 |
| Every American Flag - Sudden Death | 0 | - | 4.88 | 67,113 |
| Every African Flag - Sudden Death | 0 | - | 4.97 | 70,929 |
| Smallest 25 U.S. States - Sudden Death | 0 | - | 4.56 | 144,828 |
| NATO Members - Sudden Death | 0 | - | 4.94 | 145,987 |
| Modern Rappers - Sudden Death | 0 | - | 4.31 | 120,544 |
| U.S. Presidents - Sudden Death | 0 | - | 4.77 | 170,013 |
| Summer Olympics Host Cities - Sudden Death | 0 | - | 4.96 | 41,580 |
| Star Wars Picture Chain - Sudden Death | 0 | - | 4.51 | 96,128 |
| Michael Jackson Songs - Sudden Death | 0 | - | 4.64 | 89,182 |
| 13 American Colonies - Sudden Death | 0 | - | 4.89 | 42,116 |
| Red, White, & Blue Flags - Sudden Death | 0 | - | 4.73 | 182,407 |
| British Bands - Sudden Death | 0 | - | 4.60 | 93,338 |
| European Capitals - Sudden Death | 0 | - | 4.93 | 208,044 |
| Queen Songs - Sudden Death | 0 | - | 4.81 | 53,156 |
| ABBA Songs - Sudden Death | 0 | - | 4.64 | 43,518 |
| "C" Countries - World Map Sudden Death | 0 | - | 4.86 | 187,251 |
| Megacities - World Map Sudden Death | 0 | - | 4.92 | 144,047 |
| Real People - Sudden Death #2 (U.S.) | 0 | - | 4.57 | 78,161 |
| Blue States - Sudden Death | 0 | - | 4.97 | 85,916 |
| U.S. State Capitals - Sudden Death | 0 | - | 4.78 | 127,622 |
| China's Neighbours - Sudden Death | 0 | - | 4.70 | 142,111 |
| Shakespeare Plays - Sudden Death | 0 | - | 4.85 | 58,337 |
| NBA MVPs - Sudden Death | 0 | - | 4.52 | 118,012 |
| American Singers – Sudden Death | 0 | - | 4.50 | 79,214 |
| NATO Phonetic Alphabet - Sudden Death | 0 | - | 4.93 | 130,680 |
| American Bands - Sudden Death | 0 | - | 4.50 | 69,714 |
| Eliminate European Cities - Sudden Death | 0 | - | 4.95 | 93,290 |
| Musical Movies - Sudden Death | 0 | - | 3.95 | 68,776 |
| Two Color Flags - Sudden Death | 0 | - | 4.96 | 95,450 |
| Indo-European Languages - Sudden Death | 0 | - | 4.68 | 31,985 |
| Countries With Same-Sex Marriage – Sudden Death | 0 | - | 4.25 | 69,702 |
| Muslim Countries - Sudden Death | 0 | - | 4.93 | 145,313 |
| K-Pop Groups - Sudden Death | 0 | - | 4.21 | 43,133 |
| North American Pro Sports Teams – Sudden Death | 0 | - | 4.55 | 52,865 |
