| Groups of Two - Science | 0 | - | 4.26 | 48,445 |
| Random Symbol to Element | 0 | - | 4.88 | 93,791 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,970 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,957 |
| International Scientific Units | 0 | - | 4.95 | 158,175 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 63,220 |
| Random Geographic Groups of Seven | 0 | - | 4.92 | 46,700 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 115,287 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,835 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,248 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,101,749 |
| Science General Knowledge #1 | 0 | - | 4.54 | 167,219 |
| Science General Knowledge #2 | 0 | - | 4.48 | 119,593 |
| Science General Knowledge #3 | 0 | - | 4.56 | 109,506 |
| Word Chain - Science | 0 | - | 4.59 | 55,121 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,448 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,258,109 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,631 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,633 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 81,094 |
| First Names of Scientists | 0 | - | 4.51 | 57,176 |
| Science Decoder | 0 | - | 4.52 | 28,852 |
| Elements by Symbol | 0 | - | 4.92 | 198,480 |
| Speed Symbol by Element | 0 | - | 4.90 | 105,467 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,184 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,711 |
| Noble Gases | 0 | - | 4.89 | 78,766 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 65,003 |
| Periodic Table Symbols | 0 | - | 4.97 | 79,656 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 82,329 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 103,410 |
| Name a Valid Element | 0 | - | 4.67 | 70,373 |
| Name the Virus | 0 | - | 4.87 | 77,066 |
| Groups of Things - Sports | 0 | - | 4.27 | 67,967 |
| Groups of Things - History #2 | 0 | - | 4.40 | 79,582 |
| History Groups of Two | 0 | - | 4.31 | 40,850 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 176,506 |
| Geographic Groups of Five #1 | 0 | - | 4.47 | 120,833 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 141,715 |
| Geographic Groups of Two #2 | 0 | - | 4.64 | 115,606 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,503 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 84,453 |
| Geographic Groups of Four #2 | 0 | - | 4.77 | 81,157 |
| Geographic Groups of Five #2 | 0 | - | 4.74 | 64,253 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 70,205 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,672 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 81,085 |
| Famous Scientists | 0 | - | 4.57 | 42,829 |
| Citrus Fruits | 0 | - | 3.66 | 42,145 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,250 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,950 |
| Elemental Words | 0 | - | 4.97 | 52,529 |
| Metals of Antiquity | 0 | - | 4.95 | 93,849 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,974 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,869 |
| One-Syllable Human Body Parts | 0 | - | 4.30 | 88,502 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,703 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 277,524 |
| Musical Groups of Things | 0 | - | 4.37 | 31,308 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,921 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 93,003 |
| Geographic Groups of Eight | 0 | - | 4.39 | 58,936 |
| Geographic Groups of Seven #2 | 0 | - | 4.05 | 35,686 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,914 |
| Category Elimination - Elements | 0 | - | 4.61 | 54,053 |
| Astronomy Decoder | 0 | - | 4.48 | 38,192 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,600 |
| Scientific Names | 0 | - | 4.32 | 78,704 |
| Random Geographic Groups of Six | 0 | - | 4.37 | 50,219 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,909 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,921 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,084 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 189,664 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,785 |
| Astronomy Quiz | 0 | - | 4.90 | 83,153 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 138,276 |
| Solar System Trivia | 0 | - | 4.93 | 47,068 |
| Body Part Cliches | 0 | - | 4.44 | 123,644 |
| Bones of the Human Body | 0 | - | 4.51 | 43,472 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,829 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,810 |
| Italian Name Translation | 0 | - | 4.83 | 47,825 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 111,441 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,112,049 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,704 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,019 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,406 |
| 7 Deadly Sins | 0 | - | 4.88 | 403,627 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 109,225 |
| Disney Animated Characters | 0 | - | 4.88 | 602,697 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,689 |
| MLB Baseball Groups of Things | 0 | - | 4.11 | 18,611 |
| Literary Groups of Things | 0 | - | 4.27 | 30,717 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 54,432 |
| Countries with Four Letters | 0 | - | 4.99 | 425,373 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 170,760 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,267 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,844 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.45 | 68,272 |
| Name a Valid World City | 0 | - | 4.85 | 71,882 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,622 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,154 |
| Songs with Body Parts in the Title | 0 | - | 4.32 | 216,344 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,488 |
| Fruits: No Vowels | 0 | - | 4.81 | 100,371 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 306,402 |
| Islands by Country #1 | 0 | - | 4.90 | 176,226 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,152 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,482 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,334 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,482 |
| Country Chain | 0 | - | 4.96 | 218,294 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,569 |
| Cold War Decoder | 0 | - | 4.83 | 52,600 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,836 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 50,356 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,743 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,708 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,841 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,865 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,751 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,514 |
| Name a Valid Country #7 | 0 | - | 4.91 | 131,639 |
| Name a Valid Country #8 | 0 | - | 4.86 | 100,759 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 76,649 |
| Name a Valid Country #10 | 0 | - | 4.93 | 44,091 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,426 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,924 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,927 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,742 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,398 |
| Environmental Issues | 0 | - | 4.54 | 26,904 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,696 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,626 |
| People With Place Names | 0 | - | 4.01 | 39,846 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.61 | 46,259 |
| Shared First Names #2 | 0 | - | 4.53 | 45,835 |
| People with J Initials | 0 | - | 4.51 | 55,588 |
| History Analogies #1 | 0 | - | 4.53 | 90,358 |
| History Analogies #2 | 0 | - | 4.49 | 77,480 |
| History Analogies #3 | 0 | - | 4.61 | 80,917 |
| English Idioms #1 | 0 | - | 4.45 | 146,416 |
| Cliche Quotes Quiz #2 | 0 | - | 4.42 | 45,531 |
| Clothing Idioms | 0 | - | 4.41 | 34,333 |
| Are You a Nerd? | 0 | - | 4.35 | 45,114 |
| The Eleven Colors | 0 | - | 4.74 | 235,862 |
| King in the Answers | 0 | - | 4.42 | 50,343 |
| Super in the Answers | 0 | - | 4.52 | 110,690 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,671 |
| Five Letter Geography #3 | 0 | - | 4.62 | 131,973 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,991 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,941 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,994 |
| Seven Letter Geography #1 | 0 | - | 4.48 | 80,132 |
| Seven Letter Geography #3 | 0 | - | 4.51 | 38,842 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,720 |
| Five Letter Geography #1 | 0 | - | 4.48 | 152,026 |
| Five Letter Geography #4 | 0 | - | 4.78 | 85,226 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,710 |
| Random History by Country | 0 | - | 4.53 | 34,987 |
| Geography Decoder | 0 | - | 4.53 | 75,812 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,810 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,717 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,427 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,592 |
| Fruits by Picture | 0 | - | 4.19 | 808,949 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,563 |
| Answers are Beverages | 0 | - | 4.06 | 61,535 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,648 |
| Types of Food | 0 | - | 4.25 | 90,269 |
| The Foods they Ate | 0 | - | 4.03 | 69,555 |
| Animals Used in Food | 0 | - | 4.28 | 78,382 |
| Most Popular Fruits | 0 | - | 4.16 | 96,914 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,890 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,563 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 62,117 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,417 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 740,280 |
| Chuck Norris Facts | 0 | - | 4.52 | 8,655 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,143 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 58,421 |
| Movie Title Antonyms #1 | 0 | - | 4.82 | 196,866 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 62,317 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 324,002 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,426 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,973 |
| The Only Country ... | 0 | - | 4.91 | 81,787 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 125,172 |
| Random Countries by Borders | 0 | - | 4.99 | 82,966 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 141,129 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,438 |
| Random Point on Land to Country | 0 | - | 4.99 | 236,906 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 52,814 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,874 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,904 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,866 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,520 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,856 |
| Name a Valid Island Country | 0 | - | 4.97 | 129,209 |
| Science Vocabulary #1 | 0 | - | 4.34 | 72,146 |
