| Groups of Two - Science | 0 | - | 4.26 | 48,266 |
| Random Symbol to Element | 0 | - | 4.88 | 92,774 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,600 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,685 |
| International Scientific Units | 0 | - | 4.95 | 156,381 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,606 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 114,296 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,350 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,574 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,797 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,095,362 |
| Science General Knowledge #1 | 0 | - | 4.54 | 165,165 |
| Science General Knowledge #2 | 0 | - | 4.48 | 118,125 |
| Science General Knowledge #3 | 0 | - | 4.55 | 106,048 |
| Word Chain - Science | 0 | - | 4.59 | 54,763 |
| Groups of Things - History #1 | 0 | - | 4.41 | 93,966 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,235,961 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,478 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,874 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,739 |
| First Names of Scientists | 0 | - | 4.50 | 56,719 |
| Science Decoder | 0 | - | 4.52 | 28,730 |
| Elements by Symbol | 0 | - | 4.92 | 196,709 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,405 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,957 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,869 |
| Noble Gases | 0 | - | 4.89 | 77,958 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,423 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,846 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,427 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,700 |
| Name a Valid Element | 0 | - | 4.64 | 69,906 |
| Name the Virus | 0 | - | 4.87 | 76,627 |
| Groups of Things - Sports | 0 | - | 4.27 | 67,684 |
| Groups of Things - History #2 | 0 | - | 4.39 | 79,258 |
| History Groups of Two | 0 | - | 4.34 | 40,648 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 175,844 |
| Geographic Groups of Five #1 | 0 | - | 4.47 | 120,512 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 140,907 |
| Geographic Groups of Two #2 | 0 | - | 4.67 | 114,952 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,118 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 83,871 |
| Geographic Groups of Four #2 | 0 | - | 4.75 | 80,523 |
| Geographic Groups of Five #2 | 0 | - | 4.73 | 63,779 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 69,641 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,151 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,343 |
| Famous Scientists | 0 | - | 4.57 | 42,583 |
| Citrus Fruits | 0 | - | 3.63 | 42,033 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,868 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,785 |
| Elemental Words | 0 | - | 4.96 | 52,202 |
| Metals of Antiquity | 0 | - | 4.94 | 93,268 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,179 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,492 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,030 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,319 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 273,160 |
| Musical Groups of Things | 0 | - | 4.37 | 31,149 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,660 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 92,771 |
| Geographic Groups of Eight | 0 | - | 4.39 | 58,737 |
| Geographic Groups of Seven #2 | 0 | - | 4.04 | 35,365 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,088 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,551 |
| Astronomy Decoder | 0 | - | 4.50 | 37,981 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,170 |
| Scientific Names | 0 | - | 4.32 | 78,359 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,612,013 |
| Random Geographic Groups of Six | 0 | - | 4.40 | 49,753 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,383 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,967 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,206 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,422 |
| Astronomy Quiz | 0 | - | 4.90 | 82,327 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,798 |
| Solar System Trivia | 0 | - | 4.93 | 46,448 |
| Body Part Cliches | 0 | - | 4.43 | 123,239 |
| Bones of the Human Body | 0 | - | 4.52 | 41,982 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,002 |
| Italian Name Translation | 0 | - | 4.81 | 46,282 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,507 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,149 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,920 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,636 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,094 |
| 7 Deadly Sins | 0 | - | 4.88 | 398,819 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,416 |
| Disney Animated Characters | 0 | - | 4.88 | 600,849 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,437 |
| MLB Baseball Groups of Things | 0 | - | 4.08 | 18,526 |
| Literary Groups of Things | 0 | - | 4.26 | 30,607 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 53,803 |
| Countries with Four Letters | 0 | - | 4.99 | 421,274 |
| 4-Letter Geography Chain #1 | 0 | - | 4.81 | 169,794 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,854 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,165 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 67,549 |
| Name a Valid World City | 0 | - | 4.83 | 70,869 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 69,061 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,147 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,105 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,493 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,297 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 304,375 |
| Islands by Country #1 | 0 | - | 4.88 | 175,024 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,311 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,661 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,586 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,383 |
| Country Chain | 0 | - | 4.96 | 216,728 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,729 |
| Cold War Decoder | 0 | - | 4.83 | 52,233 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,969 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,897 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,329 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,269 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,820 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,761 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,106 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,802 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,706 |
| Name a Valid Country #8 | 0 | - | 4.85 | 98,071 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 75,175 |
| Name a Valid Country #10 | 0 | - | 4.93 | 42,538 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,351 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,238 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,506 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,616 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,485 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,321 |
| Environmental Issues | 0 | - | 4.54 | 26,802 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 718,382 |
| Chuck Norris Facts | 0 | - | 4.51 | 8,332 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,283 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,483 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.63 | 45,528 |
| Shared First Names #2 | 0 | - | 4.53 | 45,232 |
| People with J Initials | 0 | - | 4.51 | 55,378 |
| History Analogies #1 | 0 | - | 4.53 | 89,903 |
| History Analogies #2 | 0 | - | 4.49 | 77,149 |
| History Analogies #3 | 0 | - | 4.61 | 80,589 |
| English Idioms #1 | 0 | - | 4.45 | 145,273 |
| Cliche Quotes Quiz #2 | 0 | - | 4.43 | 45,356 |
| Clothing Idioms | 0 | - | 4.41 | 34,159 |
| Are You a Nerd? | 0 | - | 4.35 | 44,767 |
| The Eleven Colors | 0 | - | 4.73 | 234,835 |
| King in the Answers | 0 | - | 4.42 | 49,922 |
| Super in the Answers | 0 | - | 4.52 | 109,825 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,292 |
| Five Letter Geography #3 | 0 | - | 4.61 | 131,309 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,530 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,563 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,643 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,372 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 37,970 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,516 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,466 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,836 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,546 |
| Random History by Country | 0 | - | 4.53 | 34,799 |
| Geography Decoder | 0 | - | 4.53 | 75,543 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,560 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,498 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,226 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,343 |
| Fruits by Picture | 0 | - | 4.19 | 806,475 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,361 |
| Answers are Beverages | 0 | - | 4.10 | 61,284 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,392 |
| Types of Food | 0 | - | 4.25 | 89,527 |
| The Foods they Ate | 0 | - | 4.03 | 69,395 |
| Animals Used in Food | 0 | - | 4.28 | 77,988 |
| Most Popular Fruits | 0 | - | 4.16 | 96,515 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,741 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,091 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,794 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,506 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,852 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 195,333 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 61,947 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 321,245 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,285 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,861 |
| The Only Country ... | 0 | - | 4.91 | 80,693 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 123,724 |
| Random Countries by Borders | 0 | - | 4.99 | 82,226 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,785 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,530 |
| Random Point on Land to Country | 0 | - | 4.99 | 233,607 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,444 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,283 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,338 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,627 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,619 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,689 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,499 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,681 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,864 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,267 |
