| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,632 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,590 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,665 |
| Monarchies of Europe | 0 | - | 4.90 | 98,686 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,323 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,319 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,142 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,052 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,674 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,610 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,227 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,509 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,371 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,796 |
| The Only European Country ... | 0 | - | 4.91 | 218,465 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,213 |
| Name the English Monarchs | 0 | - | 4.91 | 505,559 |
| NATO Countries | 0 | - | 4.98 | 282,755 |
| EU Countries Quiz | 0 | - | 4.99 | 277,046 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,806 |
| All World Leaders 2026 | 0 | - | 4.95 | 20,897 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,362 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,021 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,321 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,865 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,321 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,630 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,291 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,102 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,973 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,658 |
| Slavic Countries | 0 | - | 4.96 | 112,214 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,358 |
| Counties of England | 0 | - | 4.97 | 801,515 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,329 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,701 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,084 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,091 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,090 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,747 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,091 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,870 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,385 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,599 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,298 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,218 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,384 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,689 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,356 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,266 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,263 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,641 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,700 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,313 |
| European Countries with One Border | 0 | - | 4.97 | 183,543 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,295 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,126 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,752 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,026 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,349 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,395 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,594 |
| States of Germany | 0 | - | 4.95 | 154,084 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,566 |
| Regions of Italy | 0 | - | 4.92 | 76,764 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,676 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,068 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,634 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,399 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,814 |
| Champions League Winners | 0 | - | 4.92 | 1,013,763 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,894 |
| Monarchies of Asia | 0 | - | 4.97 | 71,413 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,205 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,284 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,662 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,820 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,121 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,925 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,632 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,320 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,955 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,372 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,423 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,902 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,712 |
| European Geography A-Z | 0 | - | 4.29 | 49,444 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,705 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,330 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,519 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,885 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,659 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,573 |
| Russia Country Quiz | 0 | - | 4.83 | 115,167 |
| Countries That Border Russia | 0 | - | 4.98 | 464,019 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,641 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,513 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,883 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,555 |
| Departments of France | 0 | - | 4.93 | 54,903 |
| Countries Bordering France | 0 | - | 4.83 | 404,448 |
| Germany Country Quiz | 0 | - | 4.82 | 158,621 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,931 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,424 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,043 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,896 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,711 |
| History of The Netherlands | 0 | - | 4.46 | 17,531 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,349 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,649 |
| British Acronyms | 0 | - | 4.40 | 45,905 |
| British Monopoly Board | 0 | - | 4.52 | 41,244 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,060 |
| England or Wales? | 0 | - | 4.94 | 45,906 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,707 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,655 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,834 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,487 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,978 |
| All OPEC Countries Ever | 0 | - | 4.74 | 99,846 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,715 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 91,050 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,591 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,298 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,644 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,818 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,840 |
| Countries that Border Poland | 0 | - | 4.99 | 172,989 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,161 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,376 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,908 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,939 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,021 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,855 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,088 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,404 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,188 |
| Counties of Ireland | 0 | - | 4.92 | 196,892 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,182 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,116 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,848 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,045 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,972 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,199 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,358 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,082 |
| U.S. States by Governor | 0 | - | 4.43 | 18,109 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,746 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,756 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,632 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,670 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,999 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,980 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,878 |
| Name that Greek Letter | 0 | - | 4.93 | 324,722 |
| History of Italy | 0 | - | 4.55 | 32,115 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,788 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,391 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,050 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,917 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,885 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,547 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 404,019 |
| Famous Dictators #1 | 0 | - | 4.69 | 200,452 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,440 |
| Russian History A-Z | 0 | - | 4.35 | 32,121 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,425 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,329 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,218 |
| The Trojan War | 0 | - | 4.83 | 39,940 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,720 |
| Famous Irish People | 0 | - | 4.05 | 46,054 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,503 |
| Roman Emperors | 0 | - | 4.95 | 120,941 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,994 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,243 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,568 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,957 |
| People on Money - England | 0 | - | 4.29 | 16,637 |
| British Geography A-Z | 0 | - | 4.42 | 19,594 |
| British History A-Z #1 | 0 | - | 4.45 | 47,125 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,275 |
| London A-Z | 0 | - | 4.10 | 40,861 |
| World Leaders Quiz #1 | 0 | - | 4.12 | 110,277 |
| World Leaders Quiz #2 | 0 | - | 4.01 | 36,029 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,591 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,416 |
| Historical Rulers #2 | 0 | - | 4.24 | 47,740 |
| Historical Rulers #1 | 0 | - | 4.34 | 119,458 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,161 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,350 |
| Australian Capitals | 0 | - | 4.92 | 62,809 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,436 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,071 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,074 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,714 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,329 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,153 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,596 |
