| European Countries by First 2 Letters | 0 | - | 4.96 | 453,809 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 79,001 |
| Federal Subjects of Russia | 0 | - | 4.95 | 110,052 |
| Official European Union Languages | 0 | - | 4.98 | 198,693 |
| European Countries in their Native Language | 0 | - | 4.99 | 142,839 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 381,806 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,148 |
| Countries that Border Poland | 0 | - | 4.99 | 157,616 |
| Famous Russians Quiz | 0 | - | 4.15 | 22,554 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,246 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,748 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,903 |
| Famous Germans | 0 | - | 4.39 | 35,086 |
| Famous Italians | 0 | - | 4.40 | 65,492 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,704 |
| Celtic Nations | 0 | - | 4.76 | 44,507 |
| European Geography By Letter - A | 0 | - | 4.55 | 123,578 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 102,974 |
| European Geography By Letter - C | 0 | - | 4.44 | 104,375 |
| European Geography By Letter - D | 0 | - | 4.52 | 98,975 |
| European Geography By Letter - L | 0 | - | 4.50 | 104,409 |
| European Geography By Letter - M | 0 | - | 4.55 | 113,896 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,060 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,052 |
| European Geography By Letter - V | 0 | - | 4.45 | 85,893 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,504 |
| European Geography A-Z | 0 | - | 4.43 | 45,041 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 283,044 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 113,365 |
| Famous Dutch and Belgian People | 0 | - | 4.50 | 16,711 |
| Famous Nordic People | 0 | - | 4.40 | 10,652 |
| Famous Spaniards Quiz | 0 | - | 4.19 | 10,908 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,452 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,731 |
| Champions League Winners | 0 | - | 4.90 | 837,913 |
| Asian Geography By Letter - B | 0 | - | 4.82 | 60,532 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,476 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,692 |
| Famous French People | 0 | - | 4.15 | 24,063 |
| States of Germany | 0 | - | 4.94 | 121,546 |
| Germany Immigration by Country | 0 | - | 4.90 | 68,864 |
| Famous Irish People | 0 | - | 4.01 | 44,383 |
| Counties of Ireland | 0 | - | 4.89 | 157,223 |
| Regions of Italy | 0 | - | 4.88 | 59,512 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,179 |
| Count to 10 in Europe: Pro | 0 | - | 4.79 | 60,575 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,433 |
| Countries That Border Russia | 0 | - | 4.98 | 423,209 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,373 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,307 |
| Switzerland Immigration by Country | 0 | - | 4.81 | 19,736 |
| Famous Scottish People | 0 | - | 4.19 | 17,475 |
| England or Wales? | 0 | - | 4.93 | 39,825 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,364 |
| European Geography By Letter - E | 0 | - | 4.19 | 104,763 |
| European Geography By Letter - F | 0 | - | 4.14 | 84,602 |
| European Geography By Letter - H | 0 | - | 4.29 | 88,144 |
| European Geography By Letter - G | 0 | - | 4.24 | 94,620 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,359 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,145 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,431 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,137 |
| European Geography by Letter - W | 0 | - | 4.21 | 77,970 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,569 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,445 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 243,563 |
| Russia Country Quiz | 0 | - | 4.84 | 102,297 |
| Famous Swiss and Austrian People | 0 | - | 4.36 | 13,617 |
| Spanish Immigration by Country | 0 | - | 4.58 | 51,507 |
| Famous Australians | 0 | - | 4.21 | 19,287 |
| Word Scramble - European Countries | 0 | - | 4.71 | 112,830 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 83,316 |
| Name a Major European City A-Z | 0 | - | 4.33 | 42,461 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 55,523 |
| Slavic Languages | 0 | - | 4.58 | 48,396 |
| Poland Country Quiz | 0 | - | 4.20 | 55,387 |
| Russian History A-Z | 0 | - | 4.34 | 17,232 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.94 | 75,450 |
| Countries that Border Hungary | 0 | - | 4.98 | 95,753 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.82 | 30,647 |
| Moldova Country Quiz | 0 | - | 4.87 | 27,067 |
| Countries Bordering Serbia | 0 | - | 4.95 | 82,342 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 579,463 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,257 |
| Roman Emperors | 0 | - | 4.95 | 94,695 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 31,975 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,929 |
| The British Royal Family - Modern Times | 0 | - | 4.11 | 20,557 |
| London A-Z | 0 | - | 4.19 | 38,320 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 252,835 |
| Famous Chinese People | 0 | - | 4.06 | 10,966 |
| Africa A-Z | 0 | - | 4.54 | 43,507 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 242,934 |
| Top European Languages on a Map | 0 | - | 4.76 | 116,682 |
| Russia Multiple Choice | 0 | - | 4.56 | 37,821 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.87 | 88,539 |
| Latvia Country Quiz | 0 | - | 4.88 | 28,170 |
| French Geography Quiz #1 | 0 | - | 4.86 | 30,755 |
| Germany Multiple Choice | 0 | - | 4.80 | 48,833 |
| Ancient Greece A-Z | 0 | - | 4.63 | 20,516 |
| The Trojan War | 0 | - | 4.81 | 35,627 |
| Name that Greek Letter | 0 | - | 4.94 | 294,054 |
| Italy Multiple Choice | 0 | - | 4.72 | 92,728 |
| Provinces of the Netherlands | 0 | - | 4.61 | 32,943 |
| Switzerland A-Z | 0 | - | 4.40 | 18,313 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 45,881 |
| British Acronyms | 0 | - | 4.42 | 43,180 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 72,699 |
| Beatles Songs Quiz | 0 | - | 4.94 | 204,132 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 271,649 |
| Asian Geography By Letter - A | 0 | - | 4.66 | 65,490 |
| Asian Geography by Letter - H | 0 | - | 4.47 | 60,280 |
| Asian Geography By Letter - M | 0 | - | 4.42 | 48,724 |
| Asian Geography by Letter - P | 0 | - | 4.42 | 44,550 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 44,799 |
| Asian Geography By Letter - L | 0 | - | 4.45 | 37,375 |
| Middle East A-Z | 0 | - | 4.45 | 42,799 |
| The Americas Geography by Letter - B | 0 | - | 4.50 | 48,707 |
| The Americas Geography by Letter - S | 0 | - | 4.55 | 41,412 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.12 | 16,399 |
| Major non-NATO U.S. Allies | 0 | - | 4.43 | 33,127 |
| Europe Map Quiz | 0 | - | 5.00 | 4,253,139 |
| Europe Geography Quiz #1 | 0 | - | 4.52 | 66,713 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,197 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 65,898 |
| Europe Geography Quiz #5 | 0 | - | 4.53 | 57,597 |
| Most Mentioned Allies of Russia | 0 | - | 4.47 | 33,940 |
| Most Mentioned Enemies of Russia | 0 | - | 4.70 | 81,889 |
| Regions of France | 0 | - | 4.64 | 98,958 |
| France A-Z | 0 | - | 4.16 | 25,586 |
| France Immigration by Country | 0 | - | 4.80 | 68,270 |
| German Groups of Things | 0 | - | 4.43 | 35,751 |
| Capitals of German States | 0 | - | 4.67 | 26,976 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 13,308 |
| Germany True or False? | 0 | - | 4.64 | 44,085 |
| Largest Islands of Greece | 0 | - | 4.56 | 38,902 |
| Olympian Gods Quiz | 0 | - | 4.96 | 454,953 |
| Ancient Greek Words | 0 | - | 4.90 | 96,193 |
| Capitals of Italian Regions | 0 | - | 4.52 | 25,988 |
| 100 Most Common English Words | 0 | - | 4.91 | 1,157,408 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 396,188 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,001 |
| The Vikings! | 0 | - | 4.44 | 27,012 |
| Sweden Immigration by Country | 0 | - | 4.66 | 41,899 |
| The Portuguese Empire | 0 | - | 4.54 | 11,287 |
| British Words Quiz #2 | 0 | - | 4.03 | 106,581 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,173 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.87 | 26,314 |
| Champions League Top 4 | 0 | - | 4.76 | 101,990 |
| Asian Cities A-Z | 0 | - | 4.51 | 30,074 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,333,970 |
| Asia Map Quiz | 0 | - | 4.99 | 773,421 |
| A Quiz About Islam | 0 | - | 4.28 | 44,792 |
| Africa Map Quiz | 0 | - | 5.00 | 1,924,539 |
| Oceania Map Quiz | 0 | - | 4.97 | 562,225 |
| Australian Capitals | 0 | - | 4.90 | 52,939 |
| European Physical Geography | 0 | - | 4.19 | 31,806 |
| Albania Country Quiz | 0 | - | 4.51 | 33,899 |
| History of Russia Quiz | 0 | - | 4.48 | 29,733 |
| Geography of Russia | 0 | - | 4.54 | 20,079 |
| Croatia Country Quiz | 0 | - | 4.80 | 36,806 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 37,504 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,481 |
| Hungary Country Quiz | 0 | - | 4.47 | 37,602 |
| Romania Country Quiz | 0 | - | 4.65 | 47,213 |
| Geography of the French Empire | 0 | - | 4.49 | 25,026 |
| The French Revolution | 0 | - | 4.44 | 21,799 |
| History of France Quiz | 0 | - | 4.55 | 39,474 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,774 |
| History of Italy | 0 | - | 4.49 | 29,644 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 134,844 |
| Kings of Spain Quiz | 0 | - | 4.12 | 12,736 |
| Canary Islands | 0 | - | 4.60 | 16,491 |
| British Spellings Quiz | 0 | - | 4.04 | 94,393 |
| British Groups of Things | 0 | - | 4.26 | 79,931 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,640 |
| British Monopoly Board | 0 | - | 4.50 | 38,684 |
| Asian Geography By Letter - S | 0 | - | 4.19 | 42,917 |
| Asian Geography by Letter - D | 0 | - | 4.25 | 47,557 |
| Asian Geography by Letter - G | 0 | - | 4.36 | 47,139 |
| Asian Geography by Letter - I | 0 | - | 4.35 | 62,600 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 60,015 |
| Asian Geography by Letter - N | 0 | - | 4.28 | 39,247 |
| South and Central Asia Map Quiz | 0 | - | 4.92 | 78,580 |
| Asian Geography By Letter - O | 0 | - | 4.77 | 14,898 |
| Asian Geography By Letter - R | 0 | - | 4.43 | 13,250 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,273,005 |
| Japanese Companies | 0 | - | 4.25 | 31,900 |
| Countries of Africa | 0 | - | 5.00 | 2,139,736 |
| African East Coast | 0 | - | 4.97 | 83,243 |
| Western Africa Map Quiz | 0 | - | 4.97 | 59,918 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 39,638 |
| Australia Map Quiz | 0 | - | 4.94 | 317,211 |
| The Americas Geography by Letter - C | 0 | - | 4.28 | 54,534 |
| The Americas Geography by Letter - A | 0 | - | 4.28 | 41,682 |
| The Americas Geography by Letter - T | 0 | - | 4.23 | 38,388 |
| The Americas Geography by Letter - P | 0 | - | 4.36 | 36,124 |
| The Americas Geography by Letter - M | 0 | - | 4.40 | 36,172 |
| U.S. Federal Holidays | 0 | - | 4.29 | 95,350 |
| United States Map Quiz | 0 | - | 4.98 | 3,880,146 |
