| Countries With the Most Russian Speakers | 0 | - | 4.95 | 57,556 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 491,495 |
| Federal Subjects of Russia | 0 | - | 4.95 | 116,593 |
| Countries That Border Russia | 0 | - | 4.98 | 430,916 |
| Russia Country Quiz | 0 | - | 4.85 | 104,863 |
| Count to 10 in Europe: Pro | 0 | - | 4.81 | 61,801 |
| Official European Union Languages | 0 | - | 4.98 | 203,734 |
| European Countries in their Native Language | 0 | - | 4.99 | 145,938 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 392,291 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 154,431 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 591,701 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 38,304 |
| Europe Geography Decoder | 0 | - | 4.88 | 64,161 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,288 |
| Top European Languages on a Map | 0 | - | 4.76 | 119,974 |
| Name that Greek Letter | 0 | - | 4.94 | 298,446 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 61,965 |
| Top African Languages on a Map | 0 | - | 4.92 | 55,796 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 190,315 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 80,744 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 288,769 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 122,219 |
| Germany Multiple Choice | 0 | - | 4.81 | 50,045 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 21,180 |
| Champions League Winners | 0 | - | 4.91 | 890,532 |
| Celtic Nations | 0 | - | 4.76 | 45,024 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 32,644 |
| Regions of Spain Quiz | 0 | - | 4.87 | 97,262 |
| Cantons of Switzerland | 0 | - | 4.97 | 41,413 |
| Languages of the United Kingdom | 0 | - | 4.12 | 38,640 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 281,138 |
| Catholic Countries in Europe | 0 | - | 4.86 | 85,234 |
| France Immigration by Country | 0 | - | 4.81 | 70,134 |
| States of Germany | 0 | - | 4.94 | 126,934 |
| Germany Immigration by Country | 0 | - | 4.91 | 71,203 |
| States of the German Confederation in 1848 | 0 | - | 4.85 | 27,092 |
| Counties of Ireland | 0 | - | 4.90 | 163,282 |
| Regions of Italy | 0 | - | 4.89 | 61,971 |
| British Spellings Quiz | 0 | - | 4.04 | 95,087 |
| England or Wales? | 0 | - | 4.93 | 40,986 |
| All Champions League Teams Ever | 0 | - | 4.90 | 107,881 |
| Countries with the Most Arabic Speakers | 0 | - | 4.91 | 71,578 |
| English Words of Arabic Origin | 0 | - | 4.55 | 47,310 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,411 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 204,703 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 250,428 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 145,833 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,981 |
| Spanish Immigration by Country | 0 | - | 4.63 | 52,483 |
| Languages of Spain | 0 | - | 4.36 | 21,593 |
| British Words Quiz #1 | 0 | - | 3.77 | 236,812 |
| British Words Quiz #2 | 0 | - | 4.00 | 107,321 |
| British Foods | 0 | - | 3.85 | 47,192 |
| British and American Word Differences | 0 | - | 2.66 | 44,515 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,870 |
| Word Scramble - European Countries | 0 | - | 4.71 | 115,563 |
| Top 20 Football Clubs in Europe | 0 | - | 4.50 | 90,151 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 57,522 |
| Slavic Languages | 0 | - | 4.64 | 49,378 |
| Countries that Border Poland | 0 | - | 4.99 | 160,313 |
| Russian History A-Z | 0 | - | 4.35 | 17,618 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.92 | 76,808 |
| Countries that Beat Russia | 0 | - | 4.65 | 52,239 |
| Countries Bordering Serbia | 0 | - | 4.95 | 84,294 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.80 | 87,254 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 72,393 |
| Roman Emperors | 0 | - | 4.95 | 97,645 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,695 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 75,187 |
| Russia Multiple Choice | 0 | - | 4.56 | 38,487 |
| French Geography Quiz #1 | 0 | - | 4.86 | 31,526 |
| Olympian Gods Quiz | 0 | - | 4.96 | 460,944 |
| Italy Multiple Choice | 0 | - | 4.74 | 95,470 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 49,657 |
| Provinces of the Netherlands | 0 | - | 4.65 | 34,149 |
| British Acronyms | 0 | - | 4.41 | 43,749 |
| Foods in a Full English Breakfast | 0 | - | 4.42 | 74,665 |
| Beatles Songs Quiz | 0 | - | 4.95 | 212,420 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 276,636 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 258,413 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 248,164 |
| European Geography By Letter - A | 0 | - | 4.63 | 125,710 |
| European Geography By Letter - B #1 | 0 | - | 4.75 | 104,777 |
| European Geography By Letter - C | 0 | - | 4.45 | 106,107 |
| European Geography By Letter - D | 0 | - | 4.51 | 100,561 |
| European Geography By Letter - L | 0 | - | 4.51 | 106,218 |
| European Geography By Letter - M | 0 | - | 4.55 | 115,490 |
| European Geography By Letter - P | 0 | - | 4.79 | 90,611 |
| European Geography By Letter - N | 0 | - | 4.42 | 94,359 |
| European Geography By Letter - V | 0 | - | 4.45 | 87,385 |
| Europe Map Quiz | 0 | - | 5.00 | 4,349,547 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 67,639 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 68,111 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 66,786 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 58,358 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 94,680 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.76 | 61,649 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 63,120 |
| Most Mentioned Allies of Russia | 0 | - | 4.47 | 34,772 |
| Most Mentioned Enemies of Russia | 0 | - | 4.71 | 83,575 |
| Regions of France | 0 | - | 4.65 | 102,893 |
| German Loan Words | 0 | - | 4.28 | 130,467 |
| German Groups of Things | 0 | - | 4.43 | 36,358 |
| Capitals of German States | 0 | - | 4.70 | 27,417 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 20,574 |
| Germany True or False? | 0 | - | 4.60 | 45,073 |
| Largest Islands of Greece | 0 | - | 4.58 | 40,976 |
| Ancient Greek Words | 0 | - | 4.91 | 99,467 |
| Capitals of Italian Regions | 0 | - | 4.53 | 26,374 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 404,327 |
| The Vikings! | 0 | - | 4.45 | 27,302 |
| Sweden Immigration by Country | 0 | - | 4.66 | 42,989 |
| The Portuguese Empire | 0 | - | 4.54 | 11,410 |
| United Kingdom A-Z | 0 | - | 4.53 | 81,652 |
| Champions League Top 4 | 0 | - | 4.64 | 110,157 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,355,389 |
| Asia Map Quiz | 0 | - | 4.99 | 799,809 |
| Africa Map Quiz | 0 | - | 5.00 | 1,960,057 |
| Oceania Map Quiz | 0 | - | 4.98 | 576,365 |
| Australian Capitals | 0 | - | 4.92 | 61,101 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.78 | 58,051 |
| European Physical Geography | 0 | - | 4.20 | 32,125 |
| Albania Country Quiz | 0 | - | 4.52 | 34,996 |
| History of Russia Quiz | 0 | - | 4.48 | 30,113 |
| Geography of Russia | 0 | - | 4.54 | 20,352 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 40,034 |
| Serbia Country Quiz | 0 | - | 4.42 | 32,075 |
| History of Austria | 0 | - | 4.69 | 16,564 |
| Geography of the French Empire | 0 | - | 4.49 | 25,622 |
| The French Revolution | 0 | - | 4.45 | 22,134 |
| France Multiple Choice | 0 | - | 4.40 | 38,994 |
| History of France Quiz | 0 | - | 4.55 | 40,046 |
| Figures from Greek Mythology | 0 | - | 4.92 | 170,886 |
| History of Ireland Quiz | 0 | - | 4.44 | 19,170 |
| History of Italy | 0 | - | 4.49 | 30,028 |
| Elemental Words | 0 | - | 4.96 | 47,936 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 662,299 |
| Byzantine History | 0 | - | 4.87 | 26,571 |
| History of The Netherlands | 0 | - | 4.43 | 15,939 |
| Famous Nordic People | 0 | - | 4.41 | 10,728 |
| Kings of Spain Quiz | 0 | - | 4.12 | 12,976 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,876 |
| Canary Islands | 0 | - | 4.61 | 16,642 |
| Real Madrid 2010's Starting XI | 0 | - | 4.85 | 53,878 |
| Switzerland Immigration by Country | 0 | - | 4.76 | 22,867 |
| 100 Greatest Britons Quiz | 0 | - | 4.39 | 46,315 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 66,259 |
| British Groups of Things | 0 | - | 4.26 | 80,741 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,882 |
| British Monopoly Board | 0 | - | 4.51 | 39,474 |
| English Monarchs in Order by First Letter | 0 | - | 4.44 | 24,132 |
| Wonderwall Lyrics | 0 | - | 4.23 | 69,354 |
| Best-Selling British Musical Acts | 0 | - | 4.47 | 43,947 |
| Champions League All-Time Table | 0 | - | 4.15 | 121,324 |
| Champions League Top Goal Scorers | 0 | - | 4.21 | 184,530 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 81,733 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,293,057 |
| Japanese Loanwords | 0 | - | 4.50 | 80,048 |
| Japanese Language - Katakana Practice | 0 | - | 4.58 | 26,964 |
| Countries of Africa | 0 | - | 5.00 | 2,213,127 |
| African East Coast | 0 | - | 4.97 | 85,728 |
| Western Africa Map Quiz | 0 | - | 4.98 | 62,183 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 41,535 |
| Australia Map Quiz | 0 | - | 4.94 | 322,835 |
| American Countries on the Pacific Coast | 0 | - | 4.81 | 46,734 |
| United States Map Quiz | 0 | - | 4.98 | 3,932,412 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.17 | 50,487 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 196,920 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.93 | 87,183 |
| Countries That Use the Euro | 0 | - | 4.93 | 65,940 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 339,475 |
| European Geography By Letter - E | 0 | - | 4.21 | 106,640 |
| European Geography By Letter - F | 0 | - | 4.16 | 86,127 |
| European Geography By Letter - H | 0 | - | 4.31 | 89,746 |
| European Geography By Letter - G | 0 | - | 4.25 | 95,947 |
| European Geography By Letter - I | 0 | - | 4.10 | 89,725 |
| European Geography By Letter - K | 0 | - | 4.14 | 65,185 |
| European Geography By Letter - O | 0 | - | 4.28 | 58,378 |
| European Geography By Letter - R | 0 | - | 4.40 | 88,283 |
| European Geography by Letter - W | 0 | - | 4.22 | 78,797 |
| European Geography By Letter - T | 0 | - | 4.40 | 71,549 |
| Europe Geography Quiz #3 | 0 | - | 4.32 | 60,489 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 47,371 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 95,209 |
| European Geography A-Z | 0 | - | 4.36 | 45,908 |
| Country Codes of Europe | 0 | - | 3.36 | 12,853 |
| The Only European Country ... | 0 | - | 4.93 | 182,907 |
| Name a Major European City A-Z | 0 | - | 4.34 | 43,722 |
| Seas of Europe | 0 | - | 4.34 | 80,187 |
| Poland Country Quiz | 0 | - | 4.20 | 57,023 |
| Austria... or Australia? | 0 | - | 4.79 | 98,991 |
| Famous Dutch and Belgian People | 0 | - | 4.51 | 16,967 |
| Capitals of French Regions | 0 | - | 4.40 | 14,893 |
| Presidents of France | 0 | - | 4.23 | 20,573 |
| Word Chain - France | 0 | - | 4.37 | 40,420 |
| Famous Germans | 0 | - | 4.39 | 35,349 |
| History of Germany Quiz | 0 | - | 4.35 | 40,501 |
| Ancient Greek Trivia | 0 | - | 4.55 | 63,860 |
| The Trojan War | 0 | - | 4.80 | 36,313 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.55 | 56,965 |
