| European Countries by First 2 Letters | 0 | - | 4.95 | 533,121 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,109 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,920 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,103 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,199 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,969 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,390 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,308 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,874 |
| Official European Union Languages | 0 | - | 4.97 | 240,396 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,845 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,437 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,032 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,230 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,393 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,114 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,005 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,134 |
| Countries with NO Military | 0 | - | 4.97 | 63,633 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,607 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,364 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,771 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,281 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,799 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,285 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,807 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,290 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,894 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,173 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,794 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,570 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,150 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,224 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,583 |
| Famous Germans | 0 | - | 4.50 | 55,881 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,758 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,514 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,554 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,479 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,773 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,538 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,487 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,997 |
| Monarchies of Europe | 0 | - | 4.90 | 99,050 |
| Russian History A-Z | 0 | - | 4.35 | 32,310 |
| States of Germany | 0 | - | 4.95 | 154,972 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,825 |
| Regions of Italy | 0 | - | 4.92 | 77,279 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,929 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,611 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,908 |
| Champions League Winners | 0 | - | 4.92 | 1,018,202 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,119 |
| Monarchies of Asia | 0 | - | 4.97 | 71,621 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,368 |
| Military History Vocabulary | 0 | - | 4.92 | 67,773 |
| Battle to Country | 0 | - | 4.91 | 54,135 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,832 |
| Countries That Border Russia | 0 | - | 4.98 | 464,967 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,261 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,473 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,874 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,965 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,175 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,771 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,662 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,353 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,135 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,705 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,352 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,729 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,695 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,995 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,088 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,975 |
| European Geography A-Z | 0 | - | 4.29 | 49,526 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,364 |
| Russia Country Quiz | 0 | - | 4.83 | 115,466 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,843 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,651 |
| Famous French People | 0 | - | 4.05 | 36,168 |
| Departments of France | 0 | - | 4.93 | 55,420 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,785 |
| History of The Netherlands | 0 | - | 4.46 | 17,572 |
| British Acronyms | 0 | - | 4.40 | 45,979 |
| British Monopoly Board | 0 | - | 4.52 | 41,294 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,224 |
| Name the English Monarchs | 0 | - | 4.91 | 507,471 |
| England or Wales? | 0 | - | 4.94 | 46,063 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,508 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,821 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,577 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,945 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,615 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,721 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,800 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,457 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,205 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,928 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,068 |
| Slavic Languages | 0 | - | 4.67 | 54,789 |
| Countries that Border Poland | 0 | - | 4.99 | 173,360 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,361 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,116 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,097 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,069 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,292 |
| France A-Z | 0 | - | 4.16 | 38,366 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,089 |
| Name that Greek Letter | 0 | - | 4.93 | 325,337 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,667 |
| WWII Geography | 0 | - | 4.81 | 121,525 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,512 |
| The American Civil War | 0 | - | 4.62 | 52,667 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,058 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,718 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,288 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,029 |
| Famous Russians | 0 | - | 4.16 | 23,929 |
| History of Russia Quiz | 0 | - | 4.47 | 32,029 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,904 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,766 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,915 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,262 |
| The Trojan War | 0 | - | 4.83 | 40,091 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,268 |
| Famous Irish People | 0 | - | 4.05 | 46,082 |
| History of Italy | 0 | - | 4.55 | 32,187 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,534 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,705 |
| Roman Emperors | 0 | - | 4.95 | 121,460 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,856 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,651 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,584 |
| People on Money - England | 0 | - | 4.29 | 20,215 |
| British Geography A-Z | 0 | - | 4.42 | 19,634 |
| London A-Z | 0 | - | 4.10 | 40,912 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,862 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,063 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,694 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,799 |
| Countries in World War I | 0 | - | 4.88 | 229,481 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,481 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,844 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,944 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,580 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,251 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,518 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,475 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,255 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,228 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,412 |
| Capitals of French Regions | 0 | - | 4.45 | 16,210 |
| Regions of France | 0 | - | 4.70 | 122,427 |
| France Immigration by Country | 0 | - | 4.70 | 77,018 |
| Kings of France Quiz | 0 | - | 4.22 | 32,972 |
| German Groups of Things | 0 | - | 4.47 | 38,677 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,598 |
| Germany True or False? | 0 | - | 4.61 | 49,073 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,595 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,546 |
| Ancient Greek Words | 0 | - | 4.93 | 112,691 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,944 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,969 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,789 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,014 |
| Famous Scottish People | 0 | - | 4.22 | 18,444 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,535 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,148 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,720 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,285 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,725 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,392 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,396 |
| Countries with U.S. Troops | 0 | - | 4.38 | 132,699 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,681 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,496 |
| Australian Capitals | 0 | - | 4.92 | 62,864 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,363 |
| European Physical Geography | 0 | - | 4.26 | 33,619 |
| Albania Country Quiz | 0 | - | 4.54 | 39,308 |
| Geography of Russia | 0 | - | 4.57 | 21,623 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,517 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,168 |
| Ukraine Country Quiz | 0 | - | 4.43 | 48,048 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,844 |
| Romania Country Quiz | 0 | - | 4.63 | 54,218 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Geography of the French Empire | 0 | - | 4.45 | 27,236 |
| The French Revolution | 0 | - | 4.47 | 24,169 |
| France Multiple Choice | 0 | - | 4.39 | 40,876 |
| History of France | 0 | - | 4.61 | 57,738 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| German History A-Z | 0 | - | 4.49 | 24,951 |
