| Random Symbol to Element | 0 | - | 4.88 | 92,483 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,237 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,860 |
| International Scientific Units | 0 | - | 4.95 | 155,939 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,447 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 113,965 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,876 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,981 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,513 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,488 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,059 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,195 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,682 |
| Word Chain - Science | 0 | - | 4.59 | 54,593 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,229,544 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,833 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,661 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,107 |
| First Names of Scientists | 0 | - | 4.50 | 56,622 |
| Science Decoder | 0 | - | 4.52 | 28,683 |
| Elements by Symbol | 0 | - | 4.92 | 196,226 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,044 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,888 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,686 |
| Noble Gases | 0 | - | 4.89 | 77,731 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,273 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,483 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,188 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,459 |
| Name a Valid Element | 0 | - | 4.64 | 69,763 |
| Name the Virus | 0 | - | 4.86 | 76,502 |
| Groups of Things - Sports | 0 | - | 4.27 | 67,601 |
| Groups of Things - History #1 | 0 | - | 4.40 | 93,837 |
| Groups of Things - History #2 | 0 | - | 4.39 | 79,176 |
| History Groups of Two | 0 | - | 4.34 | 40,597 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 175,680 |
| Geographic Groups of Five #1 | 0 | - | 4.48 | 120,239 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 140,766 |
| Geographic Groups of Two #2 | 0 | - | 4.67 | 114,758 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,002 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 83,715 |
| Geographic Groups of Four #2 | 0 | - | 4.75 | 80,355 |
| Geographic Groups of Five #2 | 0 | - | 4.73 | 63,592 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 69,484 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,017 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,119 |
| Famous Scientists | 0 | - | 4.57 | 42,526 |
| Citrus Fruits | 0 | - | 3.63 | 41,983 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,744 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,745 |
| Elemental Words | 0 | - | 4.96 | 52,109 |
| Metals of Antiquity | 0 | - | 4.94 | 93,105 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,028 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,421 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,915 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,256 |
| Best-Selling Video Game Consoles | 0 | - | 4.81 | 271,715 |
| Musical Groups of Things | 0 | - | 4.37 | 31,111 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,600 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 92,715 |
| Geographic Groups of Eight | 0 | - | 4.38 | 58,696 |
| Geographic Groups of Seven #2 | 0 | - | 4.04 | 35,303 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,822 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,413 |
| Astronomy Decoder | 0 | - | 4.50 | 37,917 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,029 |
| Scientific Names | 0 | - | 4.32 | 78,275 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,602,271 |
| Random Geographic Groups of Six | 0 | - | 4.40 | 49,586 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,243 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,948 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 187,896 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,324 |
| Astronomy Quiz | 0 | - | 4.90 | 82,075 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,337 |
| Solar System Trivia | 0 | - | 4.93 | 46,304 |
| Body Part Cliches | 0 | - | 4.43 | 123,177 |
| Bones of the Human Body | 0 | - | 4.52 | 41,470 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,562 |
| Italian Name Translation | 0 | - | 4.81 | 45,777 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,270 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,719 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,241 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,051 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,762 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,458 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,165 |
| Disney Animated Characters | 0 | - | 4.88 | 600,155 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,366 |
| MLB Baseball Groups of Things | 0 | - | 4.08 | 18,507 |
| Literary Groups of Things | 0 | - | 4.26 | 30,580 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 53,626 |
| Countries with Four Letters | 0 | - | 4.99 | 420,106 |
| 4-Letter Geography Chain #1 | 0 | - | 4.81 | 169,573 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,730 |
| Eight Most Popular Berries | 0 | - | 4.43 | 98,989 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 67,346 |
| Name a Valid World City | 0 | - | 4.83 | 70,507 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,581 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,756 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,088 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,242 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,023 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 303,736 |
| Islands by Country #1 | 0 | - | 4.87 | 174,783 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,148 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,500 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,478 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,358 |
| Country Chain | 0 | - | 4.96 | 216,360 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,885 |
| Cold War Decoder | 0 | - | 4.83 | 52,103 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,711 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,762 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,428 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,558 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,697 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,737 |
| Name a Valid Country #5 | 0 | - | 4.99 | 204,032 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,080 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,028 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,420 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 74,816 |
| Name a Valid Country #10 | 0 | - | 4.93 | 42,144 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,312 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,196 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,408 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,541 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,421 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,111 |
| Environmental Issues | 0 | - | 4.54 | 26,772 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,655 |
| Chuck Norris Facts | 0 | - | 4.51 | 8,214 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,176 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,446 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.63 | 45,350 |
| Shared First Names #2 | 0 | - | 4.53 | 45,126 |
| People with J Initials | 0 | - | 4.51 | 55,323 |
| History Analogies #1 | 0 | - | 4.53 | 89,844 |
| History Analogies #2 | 0 | - | 4.49 | 77,079 |
| History Analogies #3 | 0 | - | 4.61 | 80,526 |
| English Idioms #1 | 0 | - | 4.45 | 145,078 |
| Cliche Quotes Quiz #2 | 0 | - | 4.43 | 45,308 |
| Clothing Idioms | 0 | - | 4.41 | 34,108 |
| Are You a Nerd? | 0 | - | 4.35 | 44,665 |
| The Eleven Colors | 0 | - | 4.73 | 234,514 |
| King in the Answers | 0 | - | 4.42 | 49,761 |
| Super in the Answers | 0 | - | 4.52 | 109,564 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,210 |
| Five Letter Geography #3 | 0 | - | 4.61 | 130,974 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,447 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,511 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,568 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,224 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 37,843 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,491 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,299 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,727 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,483 |
| Random History by Country | 0 | - | 4.53 | 34,727 |
| Geography Decoder | 0 | - | 4.53 | 75,464 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,484 |
| Letter A Geography Chain | 0 | - | 4.53 | 67,431 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,166 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,285 |
| Fruits by Picture | 0 | - | 4.20 | 805,748 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,320 |
| Answers are Beverages | 0 | - | 4.10 | 61,227 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,339 |
| Types of Food | 0 | - | 4.24 | 89,392 |
| The Foods they Ate | 0 | - | 4.03 | 69,339 |
| Animals Used in Food | 0 | - | 4.28 | 77,875 |
| Most Popular Fruits | 0 | - | 4.16 | 96,427 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,712 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 84,954 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,693 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,394 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,766 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 194,967 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 61,860 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 320,602 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,247 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,841 |
| The Only Country ... | 0 | - | 4.91 | 80,381 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 123,265 |
| Random Countries by Borders | 0 | - | 4.99 | 81,924 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,085 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,976 |
| Random Point on Land to Country | 0 | - | 4.99 | 232,829 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 51,543 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,996 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,550 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,685 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,088 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,269 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,416 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,231 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,553 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,773 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,228 |
