| Random Symbol to Element | 0 | - | 4.88 | 93,448 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,413 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,757 |
| International Scientific Units | 0 | - | 4.95 | 157,469 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 63,037 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 46,330 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 114,905 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,218 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,528 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,099,566 |
| Science General Knowledge #1 | 0 | - | 4.54 | 166,456 |
| Science General Knowledge #2 | 0 | - | 4.48 | 119,082 |
| Science General Knowledge #3 | 0 | - | 4.56 | 109,117 |
| Word Chain - Science | 0 | - | 4.59 | 55,008 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,242 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,250,338 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,236 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,392 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 80,296 |
| First Names of Scientists | 0 | - | 4.51 | 57,033 |
| Science Decoder | 0 | - | 4.52 | 28,810 |
| Elements by Symbol | 0 | - | 4.92 | 197,823 |
| Speed Symbol by Element | 0 | - | 4.90 | 105,047 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,115 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,439 |
| Noble Gases | 0 | - | 4.89 | 78,491 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,789 |
| Periodic Table Symbols | 0 | - | 4.97 | 72,805 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,982 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 103,144 |
| Name a Valid Element | 0 | - | 4.67 | 70,202 |
| Name the Virus | 0 | - | 4.87 | 76,909 |
| Groups of Things - Sports | 0 | - | 4.27 | 67,857 |
| Groups of Things - History #2 | 0 | - | 4.39 | 79,453 |
| History Groups of Two | 0 | - | 4.31 | 40,786 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 176,249 |
| Geographic Groups of Five #1 | 0 | - | 4.47 | 120,687 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 141,246 |
| Geographic Groups of Two #2 | 0 | - | 4.67 | 115,316 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,341 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 84,201 |
| Geographic Groups of Four #2 | 0 | - | 4.77 | 80,916 |
| Geographic Groups of Five #2 | 0 | - | 4.74 | 64,075 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 69,976 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,482 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,848 |
| Famous Scientists | 0 | - | 4.57 | 42,737 |
| Citrus Fruits | 0 | - | 3.64 | 42,103 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,106 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,892 |
| Elemental Words | 0 | - | 4.96 | 52,406 |
| Metals of Antiquity | 0 | - | 4.95 | 93,649 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,789 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,768 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,366 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,573 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 276,055 |
| Musical Groups of Things | 0 | - | 4.37 | 31,241 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,809 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 92,903 |
| Geographic Groups of Eight | 0 | - | 4.39 | 58,856 |
| Geographic Groups of Seven #2 | 0 | - | 4.05 | 35,509 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,629 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,858 |
| Astronomy Decoder | 0 | - | 4.48 | 38,125 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,457 |
| Scientific Names | 0 | - | 4.32 | 78,585 |
| Random Geographic Groups of Six | 0 | - | 4.37 | 50,026 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,636,110 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,756 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,042 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 189,179 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,652 |
| Astronomy Quiz | 0 | - | 4.90 | 82,889 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 137,778 |
| Solar System Trivia | 0 | - | 4.93 | 46,859 |
| Body Part Cliches | 0 | - | 4.44 | 123,573 |
| Bones of the Human Body | 0 | - | 4.51 | 43,142 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,420 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,117 |
| Italian Name Translation | 0 | - | 4.83 | 47,340 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 111,086 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,106,586 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,617 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,132 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,916 |
| 7 Deadly Sins | 0 | - | 4.88 | 401,777 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,969 |
| Disney Animated Characters | 0 | - | 4.88 | 602,054 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,598 |
| MLB Baseball Groups of Things | 0 | - | 4.09 | 18,584 |
| Literary Groups of Things | 0 | - | 4.26 | 30,666 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 54,191 |
| Countries with Four Letters | 0 | - | 4.99 | 423,638 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 170,318 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,137 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,600 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.45 | 68,021 |
| Name a Valid World City | 0 | - | 4.83 | 71,538 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,034 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,133 |
| Songs with Body Parts in the Title | 0 | - | 4.32 | 216,021 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,440 |
| Fruits: No Vowels | 0 | - | 4.81 | 100,032 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 305,684 |
| Islands by Country #1 | 0 | - | 4.90 | 175,603 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,764 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,140 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,902 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,440 |
| Country Chain | 0 | - | 4.96 | 217,737 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 217,591 |
| Cold War Decoder | 0 | - | 4.83 | 52,468 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,539 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 50,191 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,833 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,656 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,687 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,841 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,832 |
| Name a Valid Country #6 | 0 | - | 4.94 | 130,084 |
| Name a Valid Country #7 | 0 | - | 4.91 | 129,817 |
| Name a Valid Country #8 | 0 | - | 4.86 | 99,197 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 75,914 |
| Name a Valid Country #10 | 0 | - | 4.93 | 43,303 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,378 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,785 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,803 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,664 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,169 |
| Environmental Issues | 0 | - | 4.54 | 26,869 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,555 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,586 |
| People With Place Names | 0 | - | 4.01 | 39,729 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.61 | 46,030 |
| "Son" Last Names | 0 | - | 4.47 | 42,511 |
| Shared First Names #2 | 0 | - | 4.53 | 45,646 |
| People with J Initials | 0 | - | 4.51 | 55,510 |
| History Analogies #1 | 0 | - | 4.53 | 90,078 |
| History Analogies #2 | 0 | - | 4.49 | 77,329 |
| History Analogies #3 | 0 | - | 4.61 | 80,772 |
| English Idioms #1 | 0 | - | 4.45 | 146,145 |
| Cliche Quotes Quiz #2 | 0 | - | 4.42 | 45,456 |
| Clothing Idioms | 0 | - | 4.41 | 34,258 |
| Are You a Nerd? | 0 | - | 4.35 | 44,983 |
| The Eleven Colors | 0 | - | 4.74 | 235,512 |
| King in the Answers | 0 | - | 4.42 | 50,251 |
| Super in the Answers | 0 | - | 4.52 | 110,547 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,522 |
| Five Letter Geography #3 | 0 | - | 4.61 | 131,667 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,733 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,722 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,800 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,661 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 38,237 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,588 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,765 |
| Five Letter Geography #4 | 0 | - | 4.78 | 85,069 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,615 |
| Random History by Country | 0 | - | 4.53 | 34,918 |
| Geography Decoder | 0 | - | 4.53 | 75,732 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,730 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,649 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,363 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,524 |
| Fruits by Picture | 0 | - | 4.19 | 808,149 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,505 |
| Answers are Beverages | 0 | - | 4.06 | 61,452 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,559 |
| Types of Food | 0 | - | 4.25 | 90,139 |
| The Foods they Ate | 0 | - | 4.03 | 69,515 |
| Animals Used in Food | 0 | - | 4.28 | 78,257 |
| Most Popular Fruits | 0 | - | 4.16 | 96,785 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,848 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,400 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,996 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,973 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 727,521 |
| Chuck Norris Facts | 0 | - | 4.52 | 8,563 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,039 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 58,101 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 196,371 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 62,141 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 323,367 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,372 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,927 |
| The Only Country ... | 0 | - | 4.91 | 81,478 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 124,686 |
| Random Countries by Borders | 0 | - | 4.99 | 82,711 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 140,361 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,532 |
| Random Point on Land to Country | 0 | - | 4.99 | 235,988 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 52,435 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,223 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,855 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,787 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,748 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,407 |
| Name a Valid Island Country | 0 | - | 4.96 | 115,186 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,997 |
