| Groups of Two - Science | 0 | - | 4.26 | 48,303 |
| Random Symbol to Element | 0 | - | 4.88 | 92,999 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,817 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,163 |
| International Scientific Units | 0 | - | 4.95 | 156,710 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,732 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 114,493 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,296 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 180,147 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,985 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,096,798 |
| Science General Knowledge #1 | 0 | - | 4.54 | 165,839 |
| Science General Knowledge #2 | 0 | - | 4.48 | 118,693 |
| Science General Knowledge #3 | 0 | - | 4.56 | 108,425 |
| Word Chain - Science | 0 | - | 4.59 | 54,852 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,067 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,240,297 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,790 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,093 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 79,342 |
| First Names of Scientists | 0 | - | 4.50 | 56,791 |
| Science Decoder | 0 | - | 4.52 | 28,761 |
| Elements by Symbol | 0 | - | 4.92 | 197,072 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,596 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,002 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,172 |
| Noble Gases | 0 | - | 4.89 | 78,111 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,531 |
| Periodic Table Symbols | 0 | - | 4.97 | 72,091 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,598 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,840 |
| Name a Valid Element | 0 | - | 4.64 | 69,990 |
| Name the Virus | 0 | - | 4.87 | 76,714 |
| Groups of Things - Sports | 0 | - | 4.27 | 67,740 |
| Groups of Things - History #2 | 0 | - | 4.39 | 79,319 |
| History Groups of Two | 0 | - | 4.31 | 40,692 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 175,966 |
| Geographic Groups of Five #1 | 0 | - | 4.47 | 120,555 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 141,002 |
| Geographic Groups of Two #2 | 0 | - | 4.67 | 115,050 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,183 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 83,961 |
| Geographic Groups of Four #2 | 0 | - | 4.75 | 80,661 |
| Geographic Groups of Five #2 | 0 | - | 4.74 | 63,872 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 69,742 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,253 |
| Major Taxonomic Ranks | 0 | - | 4.56 | 80,485 |
| Famous Scientists | 0 | - | 4.57 | 42,626 |
| Citrus Fruits | 0 | - | 3.63 | 42,066 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,940 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,815 |
| Elemental Words | 0 | - | 4.96 | 52,256 |
| Metals of Antiquity | 0 | - | 4.95 | 93,395 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,284 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,562 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,129 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,367 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 274,125 |
| Musical Groups of Things | 0 | - | 4.37 | 31,174 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,705 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 92,801 |
| Geographic Groups of Eight | 0 | - | 4.39 | 58,773 |
| Geographic Groups of Seven #2 | 0 | - | 4.04 | 35,404 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,244 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,645 |
| Astronomy Decoder | 0 | - | 4.49 | 38,031 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,274 |
| Scientific Names | 0 | - | 4.32 | 78,425 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,067 |
| Random Geographic Groups of Six | 0 | - | 4.40 | 49,845 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,502 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,992 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,618 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,473 |
| Astronomy Quiz | 0 | - | 4.90 | 82,511 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 137,107 |
| Solar System Trivia | 0 | - | 4.93 | 46,582 |
| Body Part Cliches | 0 | - | 4.43 | 123,280 |
| Bones of the Human Body | 0 | - | 4.52 | 42,292 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,123 |
| Italian Name Translation | 0 | - | 4.82 | 46,507 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,661 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,100,084 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,464 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,115 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,372 |
| 7 Deadly Sins | 0 | - | 4.88 | 399,754 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,602 |
| Disney Animated Characters | 0 | - | 4.88 | 601,227 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,480 |
| MLB Baseball Groups of Things | 0 | - | 4.09 | 18,540 |
| Literary Groups of Things | 0 | - | 4.26 | 30,630 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 53,939 |
| Countries with Four Letters | 0 | - | 4.99 | 422,018 |
| 4-Letter Geography Chain #1 | 0 | - | 4.81 | 169,973 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,939 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,316 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 67,699 |
| Name a Valid World City | 0 | - | 4.83 | 71,088 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,421 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,454 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,110 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,627 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,537 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 304,829 |
| Islands by Country #1 | 0 | - | 4.88 | 175,201 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,462 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,802 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,679 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,396 |
| Country Chain | 0 | - | 4.96 | 216,977 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,387 |
| Cold War Decoder | 0 | - | 4.83 | 52,320 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,135 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,993 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,781 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,329 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,422 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,311 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,693 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,207 |
| Name a Valid Country #7 | 0 | - | 4.91 | 129,078 |
| Name a Valid Country #8 | 0 | - | 4.85 | 98,448 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 75,438 |
| Name a Valid Country #10 | 0 | - | 4.93 | 42,803 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,378 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,265 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,613 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,679 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,544 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,775 |
| Environmental Issues | 0 | - | 4.54 | 26,823 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,947 |
| Chuck Norris Facts | 0 | - | 4.51 | 8,421 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,365 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,510 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.61 | 45,665 |
| Shared First Names #2 | 0 | - | 4.53 | 45,326 |
| People with J Initials | 0 | - | 4.51 | 55,421 |
| History Analogies #1 | 0 | - | 4.53 | 89,954 |
| History Analogies #2 | 0 | - | 4.49 | 77,190 |
| History Analogies #3 | 0 | - | 4.61 | 80,634 |
| English Idioms #1 | 0 | - | 4.45 | 145,403 |
| Cliche Quotes Quiz #2 | 0 | - | 4.42 | 45,384 |
| Clothing Idioms | 0 | - | 4.41 | 34,187 |
| Are You a Nerd? | 0 | - | 4.35 | 44,843 |
| The Eleven Colors | 0 | - | 4.74 | 235,042 |
| King in the Answers | 0 | - | 4.42 | 50,070 |
| Super in the Answers | 0 | - | 4.52 | 109,960 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,363 |
| Five Letter Geography #3 | 0 | - | 4.61 | 131,457 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,598 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,617 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,701 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,463 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 38,073 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,539 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,569 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,924 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,568 |
| Random History by Country | 0 | - | 4.53 | 34,835 |
| Geography Decoder | 0 | - | 4.53 | 75,608 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,620 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,550 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,276 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,407 |
| Fruits by Picture | 0 | - | 4.19 | 807,043 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,410 |
| Answers are Beverages | 0 | - | 4.10 | 61,349 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,454 |
| Types of Food | 0 | - | 4.25 | 89,940 |
| The Foods they Ate | 0 | - | 4.03 | 69,431 |
| Animals Used in Food | 0 | - | 4.28 | 78,088 |
| Most Popular Fruits | 0 | - | 4.16 | 96,604 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,770 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,197 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,853 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,286 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,904 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 195,604 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 62,008 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 321,968 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,316 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,884 |
| The Only Country ... | 0 | - | 4.91 | 80,928 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 124,049 |
| Random Countries by Borders | 0 | - | 4.99 | 82,364 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,311 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,895 |
| Random Point on Land to Country | 0 | - | 4.99 | 234,437 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,699 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,854 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,826 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,026 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,872 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,840 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,724 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,790 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,949 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,306 |
