| European Countries by First 2 Letters | 0 | - | 4.95 | 532,619 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,014 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,797 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,926 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,014 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,597 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,976 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,001 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,761 |
| Official European Union Languages | 0 | - | 4.97 | 239,856 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,689 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,024 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,823 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,332 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,065 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,532 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,146 |
| Countries with NO Military | 0 | - | 4.97 | 63,461 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,831 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,537 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,512 |
| Celtic Nations | 0 | - | 4.61 | 47,105 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,261 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,660 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,114 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,155 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,186 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,658 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,215 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,824 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,115 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,700 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,512 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,046 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,844 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,995 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,227 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,816 |
| Slavic Countries | 0 | - | 4.96 | 112,407 |
| Famous Germans | 0 | - | 4.50 | 55,805 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,703 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,469 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,416 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,413 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,906 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,341 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,850 |
| Monarchies of Europe | 0 | - | 4.90 | 98,908 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,496 |
| States of Germany | 0 | - | 4.95 | 154,606 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,716 |
| Regions of Italy | 0 | - | 4.92 | 77,125 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,822 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,370 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,781 |
| Champions League Winners | 0 | - | 4.92 | 1,016,576 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,063 |
| Monarchies of Asia | 0 | - | 4.97 | 71,524 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,301 |
| Military History Vocabulary | 0 | - | 4.92 | 67,678 |
| Battle to Country | 0 | - | 4.91 | 53,995 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,761 |
| Geography of Russia | 0 | - | 4.57 | 21,605 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,999 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,387 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,867 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,114 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,324 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,587 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,290 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,057 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,648 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,294 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,673 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,653 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,956 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,946 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,843 |
| European Geography A-Z | 0 | - | 4.29 | 49,489 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,987 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,767 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,601 |
| Famous French People | 0 | - | 4.05 | 36,119 |
| Departments of France | 0 | - | 4.93 | 55,216 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,752 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| British Acronyms | 0 | - | 4.40 | 45,946 |
| British Monopoly Board | 0 | - | 4.52 | 41,276 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,139 |
| Name the English Monarchs | 0 | - | 4.91 | 506,742 |
| England or Wales? | 0 | - | 4.94 | 45,978 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,220 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,772 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,403 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,765 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,465 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,342 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,752 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,721 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,355 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,576 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,867 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,971 |
| Slavic Languages | 0 | - | 4.67 | 54,713 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,288 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,024 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,054 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,037 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,102 |
| France A-Z | 0 | - | 4.16 | 38,344 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,181 |
| Name that Greek Letter | 0 | - | 4.93 | 325,058 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,745 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,633 |
| WWII Geography | 0 | - | 4.81 | 121,341 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,318 |
| The American Civil War | 0 | - | 4.62 | 52,634 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,903 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,557 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,231 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,876 |
| Famous Russians | 0 | - | 4.16 | 23,915 |
| Word Chain - Russia | 0 | - | 4.33 | 15,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,880 |
| Russian History A-Z | 0 | - | 4.35 | 32,241 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,244 |
| The Trojan War | 0 | - | 4.83 | 40,002 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,014 |
| Famous Irish People | 0 | - | 4.05 | 46,068 |
| History of Italy | 0 | - | 4.55 | 32,157 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,403 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,611 |
| Roman Emperors | 0 | - | 4.95 | 121,262 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,829 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,430 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,580 |
| People on Money - England | 0 | - | 4.29 | 16,645 |
| British Geography A-Z | 0 | - | 4.42 | 19,616 |
| London A-Z | 0 | - | 4.10 | 40,881 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,792 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,779 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,457 |
| Countries in World War I | 0 | - | 4.88 | 229,220 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,213 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,427 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,747 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,381 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,535 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,198 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,470 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,437 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,196 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,201 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,349 |
| Capitals of French Regions | 0 | - | 4.45 | 16,185 |
| Regions of France | 0 | - | 4.70 | 122,158 |
| France Immigration by Country | 0 | - | 4.70 | 76,948 |
| Kings of France Quiz | 0 | - | 4.21 | 32,935 |
| German Groups of Things | 0 | - | 4.47 | 38,643 |
| Capitals of German States | 0 | - | 4.74 | 29,074 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,549 |
| Germany True or False? | 0 | - | 4.61 | 49,026 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,505 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,889 |
| Ancient Greek Words | 0 | - | 4.93 | 112,522 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,796 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,852 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,408 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,838 |
| Famous Scottish People | 0 | - | 4.22 | 18,442 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,483 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,094 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,681 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,230 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,678 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,332 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,331 |
| Countries with U.S. Troops | 0 | - | 4.38 | 132,628 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,639 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,641 |
| Australian Capitals | 0 | - | 4.92 | 62,837 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,360 |
| European Physical Geography | 0 | - | 4.26 | 33,599 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,469 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,137 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,793 |
| Romania Country Quiz | 0 | - | 4.63 | 54,149 |
| History of Austria | 0 | - | 4.70 | 17,977 |
| Geography of the French Empire | 0 | - | 4.45 | 27,220 |
| The French Revolution | 0 | - | 4.47 | 24,150 |
| France Multiple Choice | 0 | - | 4.39 | 40,855 |
| History of France | 0 | - | 4.61 | 57,644 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,561 |
| German History A-Z | 0 | - | 4.49 | 24,921 |
| Italian History A-Z | 0 | - | 4.16 | 17,941 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,939 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,529 |
