| Random Symbol to Element | 0 | - | 4.88 | 93,181 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 166,084 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,668 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,671 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,794 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,103,503 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,683 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,263 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,409 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,098,385 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,337 |
| International Scientific Units | 0 | - | 4.95 | 157,170 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,906 |
| Science General Knowledge #1 | 0 | - | 4.54 | 166,198 |
| Science General Knowledge #2 | 0 | - | 4.48 | 118,941 |
| Science General Knowledge #3 | 0 | - | 4.56 | 108,923 |
| Word Chain - Science | 0 | - | 4.59 | 54,938 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,015 |
| The Sun Quiz | 0 | - | 4.93 | 34,739 |
| First Names of Scientists | 0 | - | 4.51 | 56,937 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,246,171 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,064 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 103,001 |
| Name a Valid Element | 0 | - | 4.67 | 70,122 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,857 |
| Word Scramble - Cities #1 | 0 | - | 4.50 | 99,271 |
| Groups of Two - Science | 0 | - | 4.26 | 48,350 |
| Science Decoder | 0 | - | 4.52 | 28,784 |
| Elements by Symbol | 0 | - | 4.92 | 197,507 |
| Speed Symbol by Element | 0 | - | 4.90 | 104,854 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,335 |
| Noble Gases | 0 | - | 4.89 | 78,329 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,681 |
| Periodic Table Symbols | 0 | - | 4.97 | 72,523 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,818 |
| Name the Virus | 0 | - | 4.87 | 76,827 |
| Body Part Words | 0 | - | 4.43 | 146,074 |
| Human Body A-Z | 0 | - | 4.51 | 129,288 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,849 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,854 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,423 |
| Word Scramble - Colors | 0 | - | 4.20 | 77,745 |
| Word Scramble - Musical Instruments | 0 | - | 4.31 | 59,747 |
| Word Scramble - Deities | 0 | - | 4.52 | 10,412 |
| Christmas Word Scramble | 0 | - | 4.36 | 41,907 |
| Halloween Scramble | 0 | - | 4.14 | 31,735 |
| Word Scramble - Cities #2 | 0 | - | 4.54 | 25,161 |
| Major Taxonomic Ranks | 0 | - | 4.56 | 80,715 |
| Famous Scientists | 0 | - | 4.57 | 42,691 |
| Citrus Fruits | 0 | - | 3.63 | 42,085 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,033 |
| Elemental Words | 0 | - | 4.97 | 52,337 |
| Metals of Antiquity | 0 | - | 4.95 | 93,518 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,751 |
| Astronomy Decoder | 0 | - | 4.49 | 38,083 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,706 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,430 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 275,255 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,469 |
| Astronomy Quiz | 0 | - | 4.90 | 82,716 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 137,486 |
| Solar System Trivia | 0 | - | 4.93 | 46,727 |
| Body Parts - No Vowels | 0 | - | 4.13 | 25,399 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,628,343 |
| Italian Name Translation | 0 | - | 4.83 | 47,055 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,933 |
| Word Scramble - Christmas | 0 | - | 3.88 | 35,805 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,801 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,127 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 170,147 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,040 |
| Name a Valid World City | 0 | - | 4.83 | 71,348 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,799 |
| Scientific Names | 0 | - | 4.32 | 78,515 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,633 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,028 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,952 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,566 |
| Body Part Cliches | 0 | - | 4.43 | 123,477 |
| Bones of the Human Body | 0 | - | 4.52 | 42,814 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,252 |
| 7 Deadly Sins | 0 | - | 4.88 | 400,919 |
| Disney Animated Characters | 0 | - | 4.88 | 601,694 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,546 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,233 |
| Countries with Four Letters | 0 | - | 4.99 | 422,959 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,468 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.45 | 67,866 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 721,855 |
| Word Scramble - Beers | 0 | - | 3.83 | 36,005 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,813 |
| European History for Dummies | 0 | - | 4.83 | 90,003 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 305,299 |
| Islands by Country #1 | 0 | - | 4.88 | 175,395 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,592 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,966 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,776 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 114,729 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,876 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,065 |
| Country Chain | 0 | - | 4.96 | 217,251 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,106 |
| Cold War Decoder | 0 | - | 4.83 | 52,402 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,365 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 50,087 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,081 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,331 |
| Name a Valid Country #1 | 0 | - | 4.99 | 290,546 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,061 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,913 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,290 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,674 |
| Name a Valid Country #7 | 0 | - | 4.91 | 129,485 |
| Name a Valid Country #8 | 0 | - | 4.86 | 98,843 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 75,707 |
| Name a Valid Country #10 | 0 | - | 4.93 | 43,063 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 46,172 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,699 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,123 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,740 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,610 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,651 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,983 |
| Environmental Issues | 0 | - | 4.54 | 26,848 |
| Chuck Norris Facts | 0 | - | 4.52 | 8,505 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,476 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,547 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.61 | 45,930 |
| "Son" Last Names | 0 | - | 4.47 | 42,417 |
| Shared First Names #2 | 0 | - | 4.53 | 45,535 |
| People with J Initials | 0 | - | 4.51 | 55,493 |
| History Analogies #1 | 0 | - | 4.53 | 90,004 |
| History Analogies #2 | 0 | - | 4.49 | 77,260 |
| History Analogies #3 | 0 | - | 4.61 | 80,696 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 195,866 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 62,076 |
| English Idioms #1 | 0 | - | 4.45 | 146,008 |
| Cliche Quotes Quiz #2 | 0 | - | 4.42 | 45,433 |
| Clothing Idioms | 0 | - | 4.41 | 34,235 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 322,533 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,623 |
| Are You a Nerd? | 0 | - | 4.35 | 44,923 |
| The Eleven Colors | 0 | - | 4.74 | 235,302 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,161 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,054 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,284 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 79,890 |
| The Only Country ... | 0 | - | 4.91 | 81,280 |
| King in the Answers | 0 | - | 4.42 | 50,159 |
| Super in the Answers | 0 | - | 4.52 | 110,406 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,450 |
| Five Letter Geography #3 | 0 | - | 4.61 | 131,563 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,673 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,673 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,754 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,580 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 38,169 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,561 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,673 |
| Five Letter Geography #4 | 0 | - | 4.78 | 85,013 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,595 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 124,426 |
| Random Countries by Borders | 0 | - | 4.99 | 82,542 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,877 |
| Random History by Country | 0 | - | 4.53 | 34,884 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,263 |
| Random Point on Land to Country | 0 | - | 4.99 | 235,410 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 52,197 |
| Geography Decoder | 0 | - | 4.53 | 75,677 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,686 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,596 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,321 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,467 |
| Fruits by Picture | 0 | - | 4.19 | 807,652 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,455 |
| Answers are Beverages | 0 | - | 4.06 | 61,405 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,498 |
| Types of Food | 0 | - | 4.25 | 90,036 |
| The Foods they Ate | 0 | - | 4.03 | 69,477 |
| Animals Used in Food | 0 | - | 4.28 | 78,172 |
| Most Popular Fruits | 0 | - | 4.16 | 96,712 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,810 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,302 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,992 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,930 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,390 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,335 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,416 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,137 |
| Name a Valid Island Country | 0 | - | 4.96 | 115,041 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,935 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,919 |
| Science Vocabulary #3 | 0 | - | 4.31 | 52,033 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,358 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,313 |
| Elements by Picture | 0 | - | 4.27 | 70,021 |
| Medical Acronyms | 0 | - | 4.43 | 96,907 |
| Medical Vocabulary | 0 | - | 4.54 | 59,166 |
| Two Letter Answers #4 | 0 | - | 4.27 | 88,950 |
| Two Letter Answers #1 | 0 | - | 4.31 | 108,822 |
