| Groups of Two - Science | 0 | - | 4.26 | 48,405 |
| Random Symbol to Element | 0 | - | 4.88 | 93,518 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,618 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,163 |
| International Scientific Units | 0 | - | 4.95 | 157,603 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 63,097 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 46,470 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 115,055 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,403 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,777 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,100,234 |
| Science General Knowledge #1 | 0 | - | 4.54 | 166,904 |
| Science General Knowledge #2 | 0 | - | 4.48 | 119,419 |
| Science General Knowledge #3 | 0 | - | 4.56 | 109,327 |
| Word Chain - Science | 0 | - | 4.59 | 55,050 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,325 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,252,665 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,370 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,473 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 80,558 |
| First Names of Scientists | 0 | - | 4.51 | 57,081 |
| Science Decoder | 0 | - | 4.52 | 28,820 |
| Elements by Symbol | 0 | - | 4.92 | 198,010 |
| Speed Symbol by Element | 0 | - | 4.90 | 105,157 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,135 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,490 |
| Noble Gases | 0 | - | 4.89 | 78,560 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,852 |
| Periodic Table Symbols | 0 | - | 4.97 | 72,938 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 82,060 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 103,214 |
| Name a Valid Element | 0 | - | 4.67 | 70,246 |
| Name the Virus | 0 | - | 4.87 | 76,953 |
| Groups of Things - Sports | 0 | - | 4.27 | 67,906 |
| Groups of Things - History #2 | 0 | - | 4.40 | 79,501 |
| History Groups of Two | 0 | - | 4.31 | 40,808 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 176,345 |
| Geographic Groups of Five #1 | 0 | - | 4.47 | 120,746 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 141,579 |
| Geographic Groups of Two #2 | 0 | - | 4.67 | 115,429 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,402 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 84,311 |
| Geographic Groups of Four #2 | 0 | - | 4.77 | 80,999 |
| Geographic Groups of Five #2 | 0 | - | 4.74 | 64,137 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 70,066 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,560 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,920 |
| Famous Scientists | 0 | - | 4.57 | 42,758 |
| Citrus Fruits | 0 | - | 3.64 | 42,113 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,149 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,906 |
| Elemental Words | 0 | - | 4.96 | 52,443 |
| Metals of Antiquity | 0 | - | 4.95 | 93,704 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,843 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,792 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,408 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,620 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 276,511 |
| Musical Groups of Things | 0 | - | 4.37 | 31,269 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,853 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 92,940 |
| Geographic Groups of Eight | 0 | - | 4.39 | 58,892 |
| Geographic Groups of Seven #2 | 0 | - | 4.05 | 35,619 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,705 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,925 |
| Astronomy Decoder | 0 | - | 4.48 | 38,144 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,501 |
| Scientific Names | 0 | - | 4.32 | 78,621 |
| Random Geographic Groups of Six | 0 | - | 4.37 | 50,107 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,639,656 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,819 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,058 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 189,358 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,688 |
| Astronomy Quiz | 0 | - | 4.90 | 82,975 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 137,934 |
| Solar System Trivia | 0 | - | 4.93 | 46,931 |
| Body Part Cliches | 0 | - | 4.44 | 123,594 |
| Bones of the Human Body | 0 | - | 4.51 | 43,252 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,689 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,307 |
| Italian Name Translation | 0 | - | 4.83 | 47,513 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 111,213 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,108,131 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,925 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,392 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,069 |
| 7 Deadly Sins | 0 | - | 4.88 | 402,194 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 109,049 |
| Disney Animated Characters | 0 | - | 4.88 | 602,244 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,628 |
| MLB Baseball Groups of Things | 0 | - | 4.11 | 18,598 |
| Literary Groups of Things | 0 | - | 4.27 | 30,684 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 54,246 |
| Countries with Four Letters | 0 | - | 4.99 | 424,077 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 170,418 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,180 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,688 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.45 | 68,101 |
| Name a Valid World City | 0 | - | 4.83 | 71,633 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,182 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,136 |
| Songs with Body Parts in the Title | 0 | - | 4.32 | 216,124 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,457 |
| Fruits: No Vowels | 0 | - | 4.81 | 100,127 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 305,909 |
| Islands by Country #1 | 0 | - | 4.90 | 175,725 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,886 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,246 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,978 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,463 |
| Country Chain | 0 | - | 4.96 | 217,857 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 217,878 |
| Cold War Decoder | 0 | - | 4.83 | 52,493 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,619 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 50,237 |
| Name a Valid Country #3 | 0 | - | 4.99 | 264,077 |
| Name a Valid Country #1 | 0 | - | 4.99 | 292,179 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,960 |
| Name a Valid Country #4 | 0 | - | 4.97 | 257,089 |
| Name a Valid Country #5 | 0 | - | 4.99 | 208,080 |
| Name a Valid Country #6 | 0 | - | 4.94 | 130,271 |
| Name a Valid Country #7 | 0 | - | 4.91 | 130,024 |
| Name a Valid Country #8 | 0 | - | 4.86 | 99,371 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 76,006 |
| Name a Valid Country #10 | 0 | - | 4.93 | 43,422 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,392 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,842 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,844 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,696 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,238 |
| Environmental Issues | 0 | - | 4.54 | 26,879 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,607 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,599 |
| People With Place Names | 0 | - | 4.01 | 39,764 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.61 | 46,106 |
| Shared First Names #2 | 0 | - | 4.53 | 45,717 |
| People with J Initials | 0 | - | 4.51 | 55,529 |
| History Analogies #1 | 0 | - | 4.53 | 90,114 |
| History Analogies #2 | 0 | - | 4.49 | 77,351 |
| History Analogies #3 | 0 | - | 4.61 | 80,801 |
| English Idioms #1 | 0 | - | 4.45 | 146,186 |
| Cliche Quotes Quiz #2 | 0 | - | 4.42 | 45,465 |
| Clothing Idioms | 0 | - | 4.41 | 34,274 |
| Are You a Nerd? | 0 | - | 4.35 | 45,033 |
| The Eleven Colors | 0 | - | 4.74 | 235,622 |
| King in the Answers | 0 | - | 4.42 | 50,275 |
| Super in the Answers | 0 | - | 4.52 | 110,587 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,558 |
| Five Letter Geography #3 | 0 | - | 4.61 | 131,717 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,780 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,759 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,828 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,715 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 38,277 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,606 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,821 |
| Five Letter Geography #4 | 0 | - | 4.78 | 85,114 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,636 |
| Random History by Country | 0 | - | 4.53 | 34,943 |
| Geography Decoder | 0 | - | 4.53 | 75,755 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,755 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,674 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,386 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,551 |
| Fruits by Picture | 0 | - | 4.19 | 808,407 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,527 |
| Answers are Beverages | 0 | - | 4.06 | 61,476 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,586 |
| Types of Food | 0 | - | 4.25 | 90,173 |
| The Foods they Ate | 0 | - | 4.03 | 69,527 |
| Animals Used in Food | 0 | - | 4.28 | 78,304 |
| Most Popular Fruits | 0 | - | 4.16 | 96,827 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,863 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,457 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 62,033 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,382 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 734,634 |
| Chuck Norris Facts | 0 | - | 4.52 | 8,583 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,074 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 58,206 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 196,516 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 62,181 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 323,570 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,390 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,950 |
| The Only Country ... | 0 | - | 4.91 | 81,577 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 124,847 |
| Random Countries by Borders | 0 | - | 4.99 | 82,795 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 140,565 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,718 |
| Random Point on Land to Country | 0 | - | 4.99 | 236,281 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 52,527 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,374 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,145 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,199 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,949 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,546 |
| Name a Valid Island Country | 0 | - | 4.96 | 115,265 |
| Science Vocabulary #1 | 0 | - | 4.34 | 72,051 |
