| Elements of the Periodic Table | 0 | - | 5.00 | 2,235,679 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,095,257 |
| Elements by Symbol | 0 | - | 4.92 | 196,691 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,360 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,996 |
| International Scientific Units | 0 | - | 4.95 | 156,359 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,384 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,658 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,772 |
| Countries with Glaciers | 0 | - | 4.97 | 104,982 |
| Element... or Pokémon? | 0 | - | 4.98 | 131,272 |
| Metals of Antiquity | 0 | - | 4.94 | 93,261 |
| Astronomy Quiz | 0 | - | 4.90 | 82,311 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,928 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,509 |
| Elemental Words | 0 | - | 4.96 | 52,197 |
| Click the Chemical Element | 0 | - | 4.96 | 80,019 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,593 |
| Click the Planet | 0 | - | 4.96 | 90,998 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,826 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,847 |
| The Sun Quiz | 0 | - | 4.93 | 34,450 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,438 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,306 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,190 |
| Science General Knowledge #1 | 0 | - | 4.54 | 165,041 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,481 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 225,081 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,489 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,168 |
| Body Part Words | 0 | - | 4.43 | 145,821 |
| Body Part Cliches | 0 | - | 4.43 | 123,234 |
| Science General Knowledge #2 | 0 | - | 4.48 | 118,012 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,375 |
| Science General Knowledge #3 | 0 | - | 4.55 | 105,544 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,688 |
| Random Symbol to Element | 0 | - | 4.88 | 92,766 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,856 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,335 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 81,952 |
| Noble Gases | 0 | - | 4.89 | 77,945 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,411 |
| Name the Virus | 0 | - | 4.87 | 76,618 |
| Most Forested European Countries | 0 | - | 4.80 | 75,206 |
| First Names of Scientists | 0 | - | 4.50 | 56,718 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,499 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,627 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,340 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,414 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,386 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,420 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,587 |
| Name a Valid Element | 0 | - | 4.64 | 69,900 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,412 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,542 |
| Famous Scientists | 0 | - | 4.57 | 42,581 |
| Name the Constellations | 0 | - | 4.58 | 44,888 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,603 |
| Medical Vocabulary | 0 | - | 4.54 | 58,978 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,378 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 57,509 |
| Word Chain - Science | 0 | - | 4.59 | 54,752 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,863 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,569 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,767 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,613 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,571 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,441 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,311 |
| Astronomy Decoder | 0 | - | 4.50 | 37,976 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,965 |
| Solar System Trivia | 0 | - | 4.93 | 46,439 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,557 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,123 |
| The Mars Quiz | 0 | - | 4.55 | 18,629 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,222 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,207 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,354 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,435 |
| The Saturn Quiz | 0 | - | 4.54 | 11,537 |
| The Pluto Quiz | 0 | - | 4.61 | 9,819 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,023 |
| Human Body A-Z | 0 | - | 4.51 | 128,994 |
| Medical Acronyms | 0 | - | 4.43 | 96,693 |
| Medical Specialties | 0 | - | 4.32 | 91,468 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,019 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,579 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,902 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,674 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,770 |
| Scientific Names | 0 | - | 4.32 | 78,354 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,783 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,953 |
| Least-Forested Countries | 0 | - | 4.53 | 65,121 |
| Least Forested European Countries | 0 | - | 4.25 | 53,940 |
| Groups of Two - Science | 0 | - | 4.26 | 48,260 |
| Elements by Picture | 0 | - | 4.27 | 69,802 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,165 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,857 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,397 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,577 |
| Science True or False | 0 | - | 4.35 | 40,210 |
| Astronomy True or False | 0 | - | 4.39 | 36,393 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,170 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,478 |
| Science Decoder | 0 | - | 4.52 | 28,729 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,237 |
| Environmental Issues | 0 | - | 4.54 | 26,802 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,265 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,458 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.09 | 25,968 |
| Body Parts - No Vowels | 0 | - | 4.13 | 25,254 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,535 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,741 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 28,145 |
| The Diseases They Had | 0 | - | 4.15 | 13,980 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,691 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,779 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,105 |
| The Venus Quiz | 0 | - | 4.21 | 6,908 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,137 |
| Citrus Fruits | 0 | - | 3.63 | 42,032 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,611 |
