| Federal Subjects of Russia | 0 | - | 4.95 | 147,014 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,724 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,323 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,094 |
| Countries That Border Russia | 0 | - | 4.98 | 461,593 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,111 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,725 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,018 |
| Russia Country Quiz | 0 | - | 4.85 | 114,435 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,097 |
| Official European Union Languages | 0 | - | 4.97 | 238,426 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,793 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,048 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,823 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,761 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,966 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,822 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,137 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,342 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,350 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,508 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,336 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,976 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,639 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,883 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,381 |
| Celtic Nations | 0 | - | 4.69 | 46,931 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,254 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,923 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,204 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,223 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,002 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,984 |
| Russian History A-Z | 0 | - | 4.38 | 31,686 |
| German Groups of Things | 0 | - | 4.46 | 38,472 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,203 |
| Champions League Winners | 0 | - | 4.92 | 1,006,123 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,323 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,072 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,069 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,341 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,918 |
| States of Germany | 0 | - | 4.96 | 152,402 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,995 |
| Regions of Italy | 0 | - | 4.92 | 75,824 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,105 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,890 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,176 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,691 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,240 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,299 |
| Name a Valid African Country | 0 | - | 4.98 | 154,008 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,413 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,661 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,476 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,769 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,628 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,317 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,329 |
| Departments of France | 0 | - | 4.93 | 54,048 |
| Word Chain - France | 0 | - | 4.38 | 42,771 |
| Italian Foods | 0 | - | 4.30 | 72,758 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,540 |
| British Groups of Things | 0 | - | 4.25 | 82,862 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,034 |
| England or Wales? | 0 | - | 4.94 | 45,669 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,255 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 109,951 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,753 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,950 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,290 |
| Countries that Beat Canada | 0 | - | 4.90 | 95,948 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,594 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,654 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,653 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,865 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,418 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,001 |
| Slavic Languages | 0 | - | 4.68 | 54,345 |
| Countries that Border Poland | 0 | - | 4.99 | 172,229 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,338 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,692 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,190 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,859 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,790 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,363 |
| The Trojan War | 0 | - | 4.83 | 39,710 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,071 |
| Name that Greek Letter | 0 | - | 4.93 | 323,354 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,770 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,604 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,504 |
| Roman Emperors | 0 | - | 4.95 | 119,968 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,454 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,606 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,671 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,018 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,870 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,027 |
| Famous Russians | 0 | - | 4.16 | 23,838 |
| History of Russia Quiz | 0 | - | 4.47 | 31,913 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,719 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,370 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,222 |
| Word Chain - Germany | 0 | - | 4.31 | 22,583 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,567 |
| History of Italy | 0 | - | 4.55 | 31,968 |
| Word Chain - Italy | 0 | - | 4.07 | 23,162 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,757 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,650 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,397 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,219 |
| Geography of Spain | 0 | - | 4.59 | 22,069 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,338 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,057 |
| Name a Valid English City | 0 | - | 4.19 | 16,717 |
| Dog in the Answers | 0 | - | 4.16 | 68,630 |
| Countries With One Word and Two U's | 0 | - | 4.45 | 50,911 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,961 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,111 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,156 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,020 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 117,022 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,746 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,420 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,385 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,485 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,447 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,753 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,626 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,943 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,356 |
| Europe Map Quiz | 0 | - | 5.00 | 4,761,119 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,533 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,418 |
| Capitals of French Regions | 0 | - | 4.45 | 16,065 |
| Regions of France | 0 | - | 4.75 | 120,709 |
| France Immigration by Country | 0 | - | 4.70 | 76,485 |
| Famous Germans | 0 | - | 4.50 | 55,270 |
| Capitals of German States | 0 | - | 4.74 | 28,948 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,324 |
| Germany True or False? | 0 | - | 4.61 | 48,786 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,984 |
| Ancient Greek Words | 0 | - | 4.93 | 111,543 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,452 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,110 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,325 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,257 |
| British to American Food Translation | 0 | - | 3.38 | 51,960 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,648 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,080 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,639 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,501 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,549 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,244 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,983 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,219 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,846 |
| Australian Capitals | 0 | - | 4.92 | 62,717 |
| Word Chain - Australia | 0 | - | 4.38 | 38,137 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,497 |
| European Physical Geography | 0 | - | 4.26 | 33,500 |
| Albania Country Quiz | 0 | - | 4.54 | 38,983 |
| Geography of Russia | 0 | - | 4.57 | 21,523 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,206 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,948 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,697 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,418 |
| Romania Country Quiz | 0 | - | 4.63 | 53,755 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,017 |
| History of Austria | 0 | - | 4.70 | 17,859 |
| Geography of the French Empire | 0 | - | 4.45 | 27,054 |
| The French Revolution | 0 | - | 4.46 | 23,927 |
| France Multiple Choice | 0 | - | 4.39 | 40,733 |
| History of France | 0 | - | 4.59 | 56,941 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,839 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,915 |
| The Vikings! | 0 | - | 4.46 | 28,341 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,109 |
| The Portuguese Empire | 0 | - | 4.58 | 12,062 |
| American to British Word Translation | 0 | - | 4.14 | 138,989 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,886 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,970 |
| Champions League Top 4 | 0 | - | 4.77 | 136,297 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,975 |
| Asia Map Quiz | 0 | - | 4.99 | 916,248 |
| Countries that Beat India | 0 | - | 4.42 | 62,970 |
| Countries of Africa | 0 | - | 5.00 | 2,535,145 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,784 |
| African East Coast | 0 | - | 4.96 | 96,000 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,819 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,337 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,050 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,653 |
| Australia Map Quiz | 0 | - | 4.95 | 344,498 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,744 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,335 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,575 |
| United States Map Quiz | 0 | - | 4.98 | 4,157,230 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,121 |
