| Elements of the Periodic Table | 0 | - | 5.00 | 2,253,036 |
| Elements by Symbol | 0 | - | 4.92 | 198,039 |
| Speed Symbol by Element | 0 | - | 4.90 | 105,180 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,506 |
| Noble Gases | 0 | - | 4.89 | 78,572 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,863 |
| Periodic Table Symbols | 0 | - | 4.97 | 72,977 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 82,075 |
| Elements Whose First Letter Doesn't Match the Symbol | 0 | - | 4.87 | 18,365 |
| Elemental Words | 0 | - | 4.97 | 52,452 |
| Metals of Antiquity | 0 | - | 4.95 | 93,714 |
| First Twenty Elements - Sudden Death | 0 | - | 4.83 | 37,362 |
| Elements - Sudden Death | 0 | - | 4.93 | 134,077 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.88 | 56,586 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,059 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 189,380 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,692 |
| International Scientific Units | 0 | - | 4.95 | 157,625 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 63,108 |
| Random Symbol to Element | 0 | - | 4.88 | 93,529 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.46 | 12,263 |
| Click the Chemical Element | 0 | - | 4.96 | 80,937 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,249 |
| Name the Virus | 0 | - | 4.87 | 76,959 |
| Elements by Picture | 0 | - | 4.27 | 70,156 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,932 |
| Famous Scientists | 0 | - | 4.57 | 42,767 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,138 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 103,220 |
| Name a Valid Element | 0 | - | 4.67 | 70,252 |
| Scientific Names | 0 | - | 4.32 | 78,626 |
| Name the Metal Alloy | 0 | - | 4.73 | 13,919 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,158 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,912 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,277 |
| Element... or Pokémon? | 0 | - | 4.98 | 132,437 |
| Body Parts - Sudden Death #1 | 0 | - | 4.86 | 66,282 |
| Bones - Sudden Death | 0 | - | 4.95 | 53,119 |
| Famous Effects | 0 | - | 4.62 | 12,698 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,827 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,381 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,865 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,926 |
| Body Part Cliches | 0 | - | 4.44 | 123,595 |
| Bones of the Human Body | 0 | - | 4.51 | 43,272 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,700 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,137 |
| Astronomy Quiz | 0 | - | 4.90 | 82,993 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 137,958 |
| Solar System Trivia | 0 | - | 4.93 | 46,944 |
| Click the Planet | 0 | - | 4.96 | 91,897 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,613 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,698 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,752 |
| Environmental Issues | 0 | - | 4.54 | 26,880 |
| Name a Valid Answer - Science | 0 | - | 4.79 | 41,227 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,395 |
| Science General Knowledge #1 | 0 | - | 4.54 | 166,964 |
| Science General Knowledge #2 | 0 | - | 4.48 | 119,444 |
| Science General Knowledge #3 | 0 | - | 4.56 | 109,347 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,848 |
| Word Chain - Science | 0 | - | 4.59 | 55,054 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,848 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,100,382 |
| Body Parts - Sudden Death #2 | 0 | - | 4.80 | 44,927 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,082 |
| The Sun Quiz | 0 | - | 4.93 | 34,896 |
| First Names of Scientists | 0 | - | 4.51 | 57,097 |
| Groups of Two - Science | 0 | - | 4.26 | 48,409 |
| Science Vocabulary #1 | 0 | - | 4.34 | 72,058 |
| Science Vocabulary #3 | 0 | - | 4.31 | 52,131 |
| Science Decoder | 0 | - | 4.52 | 28,823 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,421 |
| Science True or False | 0 | - | 4.35 | 40,431 |
| Medical Acronyms | 0 | - | 4.43 | 97,095 |
| Medical Vocabulary | 0 | - | 4.54 | 59,335 |
| Birthstones by Month | 0 | - | 4.42 | 82,150 |
| Citrus Fruits | 0 | - | 3.64 | 42,117 |
| "Ologies" Quiz | 0 | - | 4.34 | 97,393 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,420 |
| Brightest Natural Objects in the Sky | 0 | - | 4.46 | 28,506 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,155 |
| Body Part Words | 0 | - | 4.43 | 146,239 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,910 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,856 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,798 |
| Human Body A-Z | 0 | - | 4.51 | 129,480 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,416 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,680 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,768 |
| Medical Specialties | 0 | - | 4.32 | 91,955 |
| The Diseases They Had | 0 | - | 4.15 | 14,043 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,080 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,905 |
| The Pluto Quiz | 0 | - | 4.61 | 9,895 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,630 |
| Astronomy Decoder | 0 | - | 4.48 | 38,146 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,487 |
| The Mars Quiz | 0 | - | 4.55 | 18,695 |
| The Saturn Quiz | 0 | - | 4.54 | 11,578 |
| Planets - Multiple Choice | 0 | - | 4.39 | 53,727 |
| Dumb it Down Doc | 0 | - | 4.13 | 65,087 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 226,770 |
| Name the Constellations | 0 | - | 4.58 | 45,161 |
| Astronomy True or False | 0 | - | 4.39 | 36,554 |
| Songs with Body Parts in the Title | 0 | - | 4.32 | 216,146 |
| Body Parts - No Vowels | 0 | - | 4.13 | 25,485 |
| The Venus Quiz | 0 | - | 4.21 | 6,937 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,436 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,564 |
| Elements Named for Countries | 0 | - | 4.52 | 24,873 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,744 |
| Animals by Skeleton Image | 0 | - | 4.81 | 46,759 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,558 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,503 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,453 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.09 | 26,713 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,797 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,179 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,830 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,691 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 60,100 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,879 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,720 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,806 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,789 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,715 |
| Least-Forested Countries | 0 | - | 4.53 | 65,334 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,551 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,621 |
| Most Forested European Countries | 0 | - | 4.80 | 75,529 |
| Least Forested European Countries | 0 | - | 4.25 | 54,114 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,844 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,894 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,608 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,245 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,733 |
| Countries with Glaciers | 0 | - | 4.96 | 105,648 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,179 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.35 | 17,365 |
