| Random Symbol to Element | 0 | - | 4.88 | 92,513 |
| International Scientific Units | 0 | - | 4.95 | 156,004 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,471 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,807 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,127 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,229 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,712 |
| Word Chain - Science | 0 | - | 4.59 | 54,609 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,230,634 |
| The Sun Quiz | 0 | - | 4.93 | 34,337 |
| First Names of Scientists | 0 | - | 4.50 | 56,639 |
| Groups of Two - Science | 0 | - | 4.26 | 48,210 |
| Science Decoder | 0 | - | 4.52 | 28,688 |
| Elements by Symbol | 0 | - | 4.92 | 196,301 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,117 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,898 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,719 |
| Noble Gases | 0 | - | 4.89 | 77,775 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,299 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,537 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,223 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,505 |
| Name a Valid Element | 0 | - | 4.64 | 69,776 |
| Name the Virus | 0 | - | 4.86 | 76,528 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,160 |
| Famous Scientists | 0 | - | 4.57 | 42,535 |
| Citrus Fruits | 0 | - | 3.63 | 41,992 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,761 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,751 |
| Elemental Words | 0 | - | 4.96 | 52,126 |
| Metals of Antiquity | 0 | - | 4.94 | 93,137 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,050 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,437 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,940 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,263 |
| Best-Selling Video Game Consoles | 0 | - | 4.81 | 271,984 |
| Books by Clue #2 | 0 | - | 4.43 | 26,639 |
| American TV by Clue #2 | 0 | - | 4.29 | 15,679 |
| Movies by Clue Quiz #2 | 0 | - | 4.33 | 84,950 |
| Movies by Clue Quiz #3 | 0 | - | 4.31 | 35,449 |
| Movies by Clue #1 | 0 | - | 4.06 | 85,589 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,856 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,431 |
| Astronomy Decoder | 0 | - | 4.50 | 37,929 |
| Scientific Names | 0 | - | 4.32 | 78,284 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,604,160 |
| MLB Baseball Team Names by Clue | 0 | - | 4.35 | 67,425 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,263 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,951 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 187,931 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,340 |
| Astronomy Quiz | 0 | - | 4.90 | 82,116 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,414 |
| Solar System Trivia | 0 | - | 4.93 | 46,324 |
| Body Part Cliches | 0 | - | 4.43 | 123,187 |
| Bones of the Human Body | 0 | - | 4.52 | 41,564 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,805 |
| Italian Name Translation | 0 | - | 4.81 | 45,928 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,295 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,274 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,372 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,159 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,818 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,672 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,211 |
| Disney Animated Characters | 0 | - | 4.88 | 600,272 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,374 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,299 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,064 |
| Books by Clue #1 | 0 | - | 4.36 | 25,736 |
| Movies by Clue Quiz #4 | 0 | - | 4.23 | 28,286 |
| Movies by Haiku #1 | 0 | - | 4.27 | 28,369 |
| Movies by Haiku #2 | 0 | - | 4.22 | 24,972 |
| Countries with Four Letters | 0 | - | 4.99 | 420,316 |
| 4-Letter Geography Chain #1 | 0 | - | 4.81 | 169,603 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,745 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,019 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 67,373 |
| Name a Valid World City | 0 | - | 4.83 | 70,598 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,653 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,841 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,094 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,282 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,062 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 303,865 |
| Islands by Country #1 | 0 | - | 4.87 | 174,820 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,178 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,527 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,499 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 114,013 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,993 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 170,281 |
| American TV by Clue #1 | 0 | - | 3.97 | 8,716 |
| Country Chain | 0 | - | 4.96 | 216,405 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,993 |
| Cold War Decoder | 0 | - | 4.83 | 52,116 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,774 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,780 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,672 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,977 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,012 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,003 |
| Name a Valid Country #5 | 0 | - | 4.99 | 204,731 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,274 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,225 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,586 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 74,901 |
| Name a Valid Country #10 | 0 | - | 4.93 | 42,239 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,316 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,554 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,207 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,419 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,551 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,426 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,482 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,153 |
| Environmental Issues | 0 | - | 4.54 | 26,773 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 716,100 |
| Chuck Norris Facts | 0 | - | 4.51 | 8,230 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,195 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,452 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.63 | 45,396 |
| "Son" Last Names | 0 | - | 4.47 | 41,948 |
| Shared First Names #2 | 0 | - | 4.53 | 45,145 |
| People with J Initials | 0 | - | 4.51 | 55,336 |
| History Analogies #1 | 0 | - | 4.53 | 89,852 |
| History Analogies #2 | 0 | - | 4.49 | 77,094 |
| History Analogies #3 | 0 | - | 4.61 | 80,537 |
| English Idioms #1 | 0 | - | 4.45 | 145,114 |
| Cliche Quotes Quiz #2 | 0 | - | 4.43 | 45,319 |
| Clothing Idioms | 0 | - | 4.41 | 34,115 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,466 |
| Are You a Nerd? | 0 | - | 4.35 | 44,680 |
| The Eleven Colors | 0 | - | 4.73 | 234,569 |
| King in the Answers | 0 | - | 4.42 | 49,779 |
| Super in the Answers | 0 | - | 4.52 | 109,598 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,223 |
| Five Letter Geography #3 | 0 | - | 4.61 | 130,996 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,455 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,517 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,579 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,256 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 37,867 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,498 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,315 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,738 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,488 |
| Random History by Country | 0 | - | 4.53 | 34,737 |
| Geography Decoder | 0 | - | 4.53 | 75,474 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,496 |
| Letter A Geography Chain | 0 | - | 4.53 | 67,439 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,181 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,295 |
| Fruits by Picture | 0 | - | 4.20 | 805,880 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,330 |
| Answers are Beverages | 0 | - | 4.10 | 61,241 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,346 |
| Types of Food | 0 | - | 4.24 | 89,413 |
| The Foods they Ate | 0 | - | 4.03 | 69,345 |
| Animals Used in Food | 0 | - | 4.28 | 77,895 |
| Most Popular Fruits | 0 | - | 4.16 | 96,443 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,716 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 84,982 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,711 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,639 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,790 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 195,027 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 61,877 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 320,738 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,898 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,700 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,239 |
| The Only Country ... | 0 | - | 4.91 | 80,442 |
| Cult Classic Films by Clue | 0 | - | 3.89 | 16,655 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 123,344 |
| Random Countries by Borders | 0 | - | 4.99 | 81,943 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,227 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,098 |
| Random Point on Land to Country | 0 | - | 4.99 | 232,926 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 51,577 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,071 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,674 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,805 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,190 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,332 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,469 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,276 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,571 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,780 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,231 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,187 |
| Elements by Picture | 0 | - | 4.27 | 69,735 |
| Medical Acronyms | 0 | - | 4.43 | 96,548 |
| Medical Vocabulary | 0 | - | 4.54 | 58,880 |
| Two Letter Answers #4 | 0 | - | 4.27 | 88,734 |
| Two Letter Answers #1 | 0 | - | 4.31 | 108,543 |
| Three Letter Answers #2 | 0 | - | 4.09 | 71,647 |
| Two Letter Answers #3 | 0 | - | 4.15 | 82,525 |
| Three Letter Answers #1 | 0 | - | 4.32 | 73,910 |
| Historical Middle Names | 0 | - | 4.16 | 35,590 |
