| Federal Subjects of Russia | 0 | - | 4.94 | 133,730 |
| Countries that Beat Russia | 0 | - | 4.83 | 78,757 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 513,976 |
| Save Europeans by Guessing Countries | 0 | - | 4.85 | 197,331 |
| Countries That Border Russia | 0 | - | 4.98 | 449,148 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 221,106 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 266,177 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 157,970 |
| Russia Country Quiz | 0 | - | 4.83 | 110,541 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 66,125 |
| Official European Union Languages | 0 | - | 4.98 | 230,217 |
| European Countries in their Native Language | 0 | - | 4.99 | 152,572 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 413,623 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 80,532 |
| French Geography Quiz #1 | 0 | - | 4.88 | 33,480 |
| Europe Geography Decoder | 0 | - | 4.85 | 67,705 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.84 | 41,105 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 40,567 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,283,999 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.85 | 84,811 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 301,175 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 151,233 |
| Germany Multiple Choice | 0 | - | 4.83 | 52,613 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 331,009 |
| Countries With One Word And Two O's | 0 | - | 4.96 | 52,417 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 22,568 |
| Celtic Nations | 0 | - | 4.74 | 46,213 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 69,892 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 70,429 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 68,914 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,087 |
| Most Mentioned Allies of Russia | 0 | - | 4.48 | 36,900 |
| Most Mentioned Enemies of Russia | 0 | - | 4.70 | 87,704 |
| German Groups of Things | 0 | - | 4.46 | 37,676 |
| Foods in a Full English Breakfast | 0 | - | 4.45 | 98,991 |
| Champions League Winners | 0 | - | 4.92 | 961,356 |
| Africa Geography Quiz #1 | 0 | - | 4.92 | 48,128 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 107,273 |
| Catholic Countries in Europe | 0 | - | 4.83 | 91,010 |
| European Geography By Letter - B #2 | 0 | - | 4.81 | 66,634 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 75,392 |
| States of Germany | 0 | - | 4.95 | 141,169 |
| Germany Immigration by Country | 0 | - | 4.86 | 76,947 |
| States of the German Confederation in 1848 | 0 | - | 4.86 | 29,893 |
| Counties of Ireland | 0 | - | 4.91 | 179,121 |
| Regions of Italy | 0 | - | 4.91 | 69,677 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 35,796 |
| Regions of Spain Quiz | 0 | - | 4.89 | 106,532 |
| Cantons of Switzerland | 0 | - | 4.97 | 46,597 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 16,848 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 130,540 |
| Category Elimination - African Geography #1 | 0 | - | 4.91 | 87,544 |
| Name a Valid African Country | 0 | - | 4.98 | 135,449 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.95 | 168,440 |
| Europe Geography Quiz #3 | 0 | - | 4.33 | 62,428 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 56,849 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 241,182 |
| Name a Valid European Country #2 | 0 | - | 4.92 | 93,781 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 33,858 |
| Departments of France | 0 | - | 4.90 | 46,711 |
| Word Chain - France | 0 | - | 4.37 | 41,867 |
| Italian Foods | 0 | - | 4.30 | 69,831 |
| Countries Surrounding Rome | 0 | - | 4.96 | 48,499 |
| British Groups of Things | 0 | - | 4.25 | 82,151 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,569 |
| England or Wales? | 0 | - | 4.94 | 43,801 |
| All UEFA Champions League Teams Ever | 0 | - | 4.83 | 122,948 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.89 | 103,583 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 91,524 |
| Name a Valid Asian Country | 0 | - | 4.98 | 116,328 |
| Countries that Beat the United States | 0 | - | 4.93 | 159,718 |
| Countries that Beat Canada | 0 | - | 4.90 | 84,448 |
| Pre-Euro Currencies | 0 | - | 4.43 | 51,634 |
| Word Scramble - European Countries | 0 | - | 4.74 | 136,950 |
| Top 20 Football Clubs in Europe | 0 | - | 4.47 | 106,537 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 62,251 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 84,737 |
| Slavic Languages | 0 | - | 4.65 | 52,381 |
| Countries that Border Poland | 0 | - | 4.99 | 167,496 |
| Russian History A-Z | 0 | - | 4.37 | 18,529 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 160,969 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 69,295 |
| Countries that Border Hungary | 0 | - | 4.98 | 101,777 |
| Moldova Country Quiz | 0 | - | 4.81 | 29,565 |
| Countries Bordering Serbia | 0 | - | 4.96 | 89,151 |
| The Trojan War | 0 | - | 4.81 | 38,248 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 620,964 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.84 | 104,536 |
| Capitals of Italian Regions | 0 | - | 4.61 | 35,809 |
| Ancient Roman Trivia #1 | 0 | - | 4.83 | 81,303 |
| Roman Emperors | 0 | - | 4.96 | 111,061 |
| Spanish Immigration by Country | 0 | - | 4.63 | 54,402 |
| Most Common First Names in Spain | 0 | - | 4.26 | 44,936 |
| Most Common Surnames in the UK | 0 | - | 4.20 | 68,435 |
| Fictional Characters from Great Britain | 0 | - | 4.11 | 31,856 |
| Countries that Beat Indonesia | 0 | - | 4.85 | 52,890 |
| Top European Languages on a Map | 0 | - | 4.78 | 127,293 |
| Famous Russians Quiz | 0 | - | 4.16 | 23,290 |
| Russia Multiple Choice | 0 | - | 4.57 | 39,859 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.85 | 93,930 |
| French Geography Quiz #2 | 0 | - | 4.62 | 22,557 |
| Word Chain - Germany | 0 | - | 4.32 | 22,101 |
| Olympian Gods Quiz | 0 | - | 4.96 | 474,409 |
| Name that Greek Letter | 0 | - | 4.93 | 313,505 |
| Word Chain - Italy | 0 | - | 4.07 | 22,789 |
| Italy Multiple Choice | 0 | - | 4.74 | 100,533 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 33,799 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 14,929 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 76,406 |
| Geography of Spain | 0 | - | 4.58 | 21,446 |
| Word Chain - United Kingdom | 0 | - | 4.06 | 28,931 |
| Members of the British Royal Family | 0 | - | 4.10 | 112,600 |
| Name a Valid English City | 0 | - | 4.19 | 16,244 |
| Dog in the Answers | 0 | - | 4.15 | 67,207 |
| Countries With One Word and Two U's | 0 | - | 4.50 | 48,538 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,313 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 260,332 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 25,699 |
| European Geography By Letter - A | 0 | - | 4.61 | 129,846 |
| European Geography By Letter - B #1 | 0 | - | 4.70 | 108,371 |
| European Geography By Letter - C | 0 | - | 4.46 | 109,486 |
| European Geography By Letter - D | 0 | - | 4.51 | 104,200 |
| European Geography By Letter - L | 0 | - | 4.52 | 109,623 |
| European Geography By Letter - M | 0 | - | 4.53 | 118,886 |
| European Geography By Letter - P | 0 | - | 4.79 | 94,073 |
| European Geography By Letter - N | 0 | - | 4.43 | 97,546 |
| European Geography By Letter - R | 0 | - | 4.41 | 90,744 |
| European Geography By Letter - V | 0 | - | 4.44 | 90,038 |
| Europe Map Quiz | 0 | - | 5.00 | 4,604,286 |
| European Geography By Letter - S #1 | 0 | - | 4.61 | 97,580 |
| Four Letter European Geography #1 | 0 | - | 4.50 | 25,187 |
| Four Letter European Geography #2 | 0 | - | 4.55 | 18,087 |
| Capitals of French Regions | 0 | - | 4.42 | 15,626 |
| Regions of France | 0 | - | 4.74 | 113,323 |
| France Immigration by Country | 0 | - | 4.77 | 74,068 |
| Famous Germans | 0 | - | 4.43 | 40,809 |
| Capitals of German States | 0 | - | 4.72 | 28,334 |
| Chancellors of Germany, 1949–present | 0 | - | 4.57 | 22,304 |
| Germany True or False? | 0 | - | 4.63 | 47,302 |
| Largest Islands of Greece | 0 | - | 4.59 | 45,272 |
| Ancient Greek Words | 0 | - | 4.92 | 106,716 |
| Famous Italians by Clue | 0 | - | 4.46 | 76,276 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 53,494 |
| Provinces of the Netherlands | 0 | - | 4.76 | 38,156 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 47,432 |
| British to American Food Translation. | 0 | - | 3.37 | 51,448 |
| Beatles Songs Quiz | 0 | - | 4.96 | 225,759 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 285,131 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 52,575 |
| Asia Geography Quiz #2 | 0 | - | 4.59 | 47,488 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 31,703 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 270,606 |
| Africa Map Quiz | 0 | - | 5.00 | 2,052,732 |
| Oceania Map Quiz | 0 | - | 4.98 | 612,291 |
| Australian Capitals | 0 | - | 4.92 | 62,055 |
| Word Chain - Australia | 0 | - | 4.38 | 37,505 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 48,967 |
| European Physical Geography | 0 | - | 4.24 | 32,960 |
| Albania Country Quiz | 0 | - | 4.53 | 37,318 |
| History of Russia Quiz | 0 | - | 4.48 | 31,298 |
| Geography of Russia | 0 | - | 4.56 | 21,028 |
| Croatia Country Quiz | 0 | - | 4.80 | 41,167 |
| Czech Republic Country Quiz | 0 | - | 4.51 | 40,621 |
| Slovakia... or Slovenia? | 0 | - | 4.70 | 41,049 |
| Ukraine Country Quiz | 0 | - | 4.41 | 45,829 |
| Hungary Country Quiz | 0 | - | 4.48 | 41,438 |
| Romania Country Quiz | 0 | - | 4.63 | 51,745 |
| Serbia Country Quiz | 0 | - | 4.43 | 33,776 |
| History of Austria | 0 | - | 4.69 | 17,318 |
| Geography of the French Empire | 0 | - | 4.51 | 26,369 |
| The French Revolution | 0 | - | 4.45 | 23,055 |
| France Multiple Choice | 0 | - | 4.37 | 40,128 |
| History of France Quiz | 0 | - | 4.56 | 41,982 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.42 | 22,983 |
| Figures from Greek Mythology | 0 | - | 4.90 | 177,372 |
| History of Ireland Quiz | 0 | - | 4.44 | 20,445 |
| History of Italy | 0 | - | 4.54 | 31,233 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 421,621 |
| The Vikings! | 0 | - | 4.46 | 27,919 |
| Sweden Immigration by Country | 0 | - | 4.54 | 54,159 |
| The Portuguese Empire | 0 | - | 4.54 | 11,784 |
| American to British Word Translation | 0 | - | 4.02 | 115,143 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,039 |
| United Kingdom A-Z | 0 | - | 4.53 | 85,359 |
| Champions League Top 4 | 0 | - | 4.70 | 125,386 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,410,036 |
| Asia Map Quiz | 0 | - | 4.99 | 869,108 |
| Countries that Beat India | 0 | - | 4.41 | 61,244 |
| Countries of Africa | 0 | - | 5.00 | 2,396,524 |
| African East Coast | 0 | - | 4.96 | 91,673 |
| Western Africa Map Quiz | 0 | - | 4.97 | 69,436 |
| Countries that Beat South Africa | 0 | - | 4.69 | 40,836 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,645 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 46,865 |
| Australia Map Quiz | 0 | - | 4.94 | 335,868 |
| Hispanic Last Names in the U.S. | 0 | - | 4.30 | 54,089 |
| South American Geography Quiz #2 | 0 | - | 4.64 | 38,526 |
| South American Geography Quiz #1 | 0 | - | 4.74 | 31,922 |
| United States Map Quiz | 0 | - | 4.98 | 4,077,679 |
| U.S. History for Dummies | 0 | - | 4.46 | 80,368 |
