| Groups of Two - Science | 0 | - | 4.26 | 48,471 |
| Random Symbol to Element | 0 | - | 4.88 | 94,079 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,188 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,749 |
| International Scientific Units | 0 | - | 4.95 | 158,396 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 63,355 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 115,437 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,133 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,496 |
| Random Geographic Groups of Seven | 0 | - | 4.92 | 46,859 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,102,799 |
| Science General Knowledge #1 | 0 | - | 4.54 | 167,411 |
| Science General Knowledge #2 | 0 | - | 4.48 | 119,708 |
| Science General Knowledge #3 | 0 | - | 4.56 | 109,630 |
| Word Chain - Science | 0 | - | 4.59 | 55,170 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,529 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,261,637 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,799 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,755 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 81,449 |
| First Names of Scientists | 0 | - | 4.51 | 57,237 |
| Science Decoder | 0 | - | 4.52 | 28,862 |
| Elements by Symbol | 0 | - | 4.92 | 198,787 |
| Speed Symbol by Element | 0 | - | 4.90 | 105,627 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,211 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,821 |
| Noble Gases | 0 | - | 4.89 | 78,867 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 65,109 |
| Periodic Table Symbols | 0 | - | 4.97 | 80,863 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 82,458 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 103,528 |
| Name a Valid Element | 0 | - | 4.68 | 70,425 |
| Name the Virus | 0 | - | 4.87 | 77,134 |
| Groups of Things - Sports | 0 | - | 4.27 | 68,017 |
| Groups of Things - History #2 | 0 | - | 4.40 | 79,632 |
| History Groups of Two | 0 | - | 4.31 | 40,887 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 176,615 |
| Geographic Groups of Five #1 | 0 | - | 4.48 | 120,893 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 141,792 |
| Geographic Groups of Two #2 | 0 | - | 4.64 | 115,719 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,565 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 84,554 |
| Geographic Groups of Four #2 | 0 | - | 4.77 | 81,273 |
| Geographic Groups of Five #2 | 0 | - | 4.72 | 64,344 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 70,302 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,762 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 81,164 |
| Famous Scientists | 0 | - | 4.58 | 42,861 |
| Citrus Fruits | 0 | - | 3.67 | 42,206 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,297 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,977 |
| Elemental Words | 0 | - | 4.97 | 52,572 |
| Metals of Antiquity | 0 | - | 4.95 | 93,958 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 177,104 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,922 |
| One-Syllable Human Body Parts | 0 | - | 4.30 | 88,558 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,741 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 278,401 |
| Musical Groups of Things | 0 | - | 4.37 | 31,329 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,977 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 93,042 |
| Geographic Groups of Eight | 0 | - | 4.39 | 58,974 |
| Geographic Groups of Seven #2 | 0 | - | 4.05 | 35,720 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,021 |
| Category Elimination - Elements | 0 | - | 4.61 | 54,138 |
| Astronomy Decoder | 0 | - | 4.48 | 38,238 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,670 |
| Scientific Names | 0 | - | 4.32 | 78,741 |
| Random Geographic Groups of Six | 0 | - | 4.37 | 50,304 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,655,234 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,997 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,101 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 189,809 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,846 |
| Astronomy Quiz | 0 | - | 4.90 | 83,337 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 138,526 |
| Solar System Trivia | 0 | - | 4.93 | 47,207 |
| Body Part Cliches | 0 | - | 4.44 | 123,674 |
| Bones of the Human Body | 0 | - | 4.51 | 43,627 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,934 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,017 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,134 |
| Italian Name Translation | 0 | - | 4.83 | 48,021 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 111,796 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,126,101 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,373 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,584 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,772 |
| 7 Deadly Sins | 0 | - | 4.88 | 404,284 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 109,354 |
| Disney Animated Characters | 0 | - | 4.88 | 602,990 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,726 |
| MLB Baseball Groups of Things | 0 | - | 4.11 | 18,620 |
| Literary Groups of Things | 0 | - | 4.27 | 30,726 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 54,565 |
| Countries with Four Letters | 0 | - | 4.99 | 426,027 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 170,953 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,337 |
| Eight Most Popular Berries | 0 | - | 4.43 | 100,300 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.45 | 68,567 |
| Name a Valid World City | 0 | - | 4.85 | 72,034 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,163 |
| Songs with Body Parts in the Title | 0 | - | 4.32 | 216,493 |
| Fruits: No Vowels | 0 | - | 4.81 | 100,544 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 306,713 |
| Islands by Country #1 | 0 | - | 4.90 | 176,407 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,277 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,599 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,423 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,502 |
| Country Chain | 0 | - | 4.96 | 218,520 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,201 |
| Cold War Decoder | 0 | - | 4.83 | 52,668 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,970 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 50,424 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,146 |
| Name a Valid Country #1 | 0 | - | 4.99 | 295,560 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,325 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,320 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,173 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,380 |
| Name a Valid Country #7 | 0 | - | 4.91 | 131,953 |
| Name a Valid Country #8 | 0 | - | 4.86 | 101,086 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 76,851 |
| Name a Valid Country #10 | 0 | - | 4.93 | 44,302 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,513 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,451 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,980 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,967 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,768 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,510 |
| Environmental Issues | 0 | - | 4.54 | 26,914 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,753 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,645 |
| People With Place Names | 0 | - | 4.01 | 39,883 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.61 | 46,336 |
| Shared First Names #2 | 0 | - | 4.53 | 45,895 |
| People with J Initials | 0 | - | 4.51 | 55,614 |
| History Analogies #1 | 0 | - | 4.53 | 90,390 |
| History Analogies #2 | 0 | - | 4.49 | 77,512 |
| History Analogies #3 | 0 | - | 4.61 | 80,959 |
| English Idioms #1 | 0 | - | 4.45 | 146,524 |
| Cliche Quotes Quiz #2 | 0 | - | 4.42 | 45,556 |
| Clothing Idioms | 0 | - | 4.41 | 34,363 |
| Are You a Nerd? | 0 | - | 4.35 | 45,185 |
| The Eleven Colors | 0 | - | 4.74 | 236,063 |
| King in the Answers | 0 | - | 4.42 | 50,411 |
| Super in the Answers | 0 | - | 4.52 | 110,763 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,718 |
| Five Letter Geography #3 | 0 | - | 4.63 | 132,085 |
| Six Letter Geography #1 | 0 | - | 4.42 | 115,060 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,998 |
| Six Letter Geography #3 | 0 | - | 4.52 | 82,043 |
| Seven Letter Geography #1 | 0 | - | 4.48 | 80,564 |
| Seven Letter Geography #3 | 0 | - | 4.51 | 38,934 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,737 |
| Five Letter Geography #1 | 0 | - | 4.48 | 152,126 |
| Five Letter Geography #4 | 0 | - | 4.77 | 85,307 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,755 |
| Random History by Country | 0 | - | 4.53 | 35,014 |
| Geography Decoder | 0 | - | 4.53 | 75,846 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,847 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,757 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,458 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,872 |
| Fruits by Picture | 0 | - | 4.19 | 809,548 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,854 |
| Answers are Beverages | 0 | - | 4.06 | 61,818 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,935 |
| Types of Food | 0 | - | 4.25 | 90,636 |
| The Foods they Ate | 0 | - | 4.03 | 69,797 |
| Animals Used in Food | 0 | - | 4.28 | 78,591 |
| Most Popular Fruits | 0 | - | 4.16 | 97,077 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,945 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,714 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 62,167 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,954 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 743,648 |
| Chuck Norris Facts | 0 | - | 4.52 | 8,714 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,234 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 197,046 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 62,370 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 324,308 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,455 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,985 |
| The Only Country ... | 0 | - | 4.91 | 81,934 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 125,374 |
| Random Countries by Borders | 0 | - | 4.99 | 83,126 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 141,618 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,729 |
| Random Point on Land to Country | 0 | - | 4.99 | 237,360 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 52,978 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,186 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,306 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,207 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,827 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,024 |
| Name a Valid Island Country | 0 | - | 4.97 | 130,236 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 58,537 |
| Science Vocabulary #1 | 0 | - | 4.34 | 72,207 |
