| Name Every Beatles Song | 0 | - | 4.97 | 235,713 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,537 |
| Imagine Lyrics | 0 | - | 4.53 | 43,228 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,293 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,955 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,604 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,078 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,119 |
| Name a Valid African Country | 0 | - | 4.98 | 153,810 |
| States of Mexico | 0 | - | 4.95 | 175,563 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,314 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,560 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,788 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,682 |
| States of Brazil | 0 | - | 4.97 | 87,688 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,522 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,208 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,689,163 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,689 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,361 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,732 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,816 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,085 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,386 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,723 |
| First Lines of Beatles Songs | 0 | - | 4.36 | 46,825 |
| Beatles Songs by Synopsis | 0 | - | 4.31 | 32,882 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,745 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,574 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,803 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 295,997 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,719 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,569 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,302 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,480 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,672 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,162 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,104 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,704 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,108 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,318 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,633 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,252 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,394 |
| Viva la Vida Lyrics | 0 | - | 4.37 | 49,789 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,478 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,940 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,915 |
| Word Chain - Australia | 0 | - | 4.38 | 38,121 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,768 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,465 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,055 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,878 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,284 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,214 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,873 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,163 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,190 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,860 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,389 |
| German Groups of Things | 0 | - | 4.46 | 38,442 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,092 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,475 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,503 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,225 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,719 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,713 |
| Vietnam War Countries | 0 | - | 4.82 | 94,099 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 836,269 |
| Countries that Beat North Korea | 0 | - | 4.43 | 34,312 |
| Countries that Beat India | 0 | - | 4.41 | 62,877 |
| Countries of Africa | 0 | - | 5.00 | 2,530,768 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,878 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,481 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,031 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,637 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,695 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,408 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,031 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,104 |
| African East Coast | 0 | - | 4.96 | 95,847 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,211 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,652 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,726 |
| African Island Countries | 0 | - | 4.96 | 101,451 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,092 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,139 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,352 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,282 |
| Countries that Beat D.R. Congo | 0 | - | 4.74 | 41,723 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,744 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,037 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,493 |
| Australian States and Territories | 0 | - | 4.96 | 141,712 |
| Australian Capitals | 0 | - | 4.92 | 62,696 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,234 |
| Australia Map Quiz | 0 | - | 4.95 | 343,881 |
| Australia True or False | 0 | - | 4.87 | 56,782 |
| Countries that Beat New Zealand | 0 | - | 4.70 | 26,401 |
| Flags of North and South America | 0 | - | 4.99 | 372,049 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,518 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,101 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,384 |
| History of Mexico | 0 | - | 4.58 | 15,291 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,513 |
| South American Physical Geography | 0 | - | 4.58 | 18,332 |
| Word Chain - South America | 0 | - | 4.51 | 23,875 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,427 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,690 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,563 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,699 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,788 |
| North America Map Quiz | 0 | - | 4.98 | 247,785 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,661 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,327 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,046 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,542 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,277 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,615 |
| Presidential Middle Names | 0 | - | 4.41 | 60,119 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,199 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,455 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,946 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,364 |
| The American Revolution | 0 | - | 4.52 | 54,216 |
| California Groups of Things | 0 | - | 4.25 | 45,427 |
| New York Groups of Things | 0 | - | 4.37 | 63,157 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,410 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,937 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,252 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,478 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,280 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,051 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,804 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,587 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,798 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,586 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,240,410 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,009 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,020 |
| Official European Union Languages | 0 | - | 4.97 | 238,171 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,640 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,619 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,889 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,874 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,450 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,997 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,214 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,005 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,599 |
| The Only European Country ... | 0 | - | 4.91 | 216,044 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,264 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,017 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,764 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,798 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,828 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,032 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,765 |
| Slavic Countries | 0 | - | 4.96 | 111,508 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,198 |
| Word Chain - France | 0 | - | 4.38 | 42,748 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,294 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,888 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,877 |
| Italian Foods | 0 | - | 4.30 | 72,667 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,308 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,376 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,586 |
| Geography of Spain | 0 | - | 4.59 | 22,055 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,766 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,636 |
| British Groups of Things | 0 | - | 4.25 | 82,838 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,061 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,002 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,021 |
| Counties of England | 0 | - | 4.97 | 795,015 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,016 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,703 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,863 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,870 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,485 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,540 |
| Champions League Winners | 0 | - | 4.92 | 1,004,159 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,609 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,098 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,789 |
| Asia Map Quiz | 0 | - | 4.99 | 914,748 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,553 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,989 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,831 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,681 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,301 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,282 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,683 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,029 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 49,769 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,423 |
| Countries of the Middle East | 0 | - | 4.96 | 200,783 |
| Countries that Beat Saudi Arabia | 0 | - | 4.74 | 46,300 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,444 |
