| European Countries by First 2 Letters | 0 | - | 4.95 | 528,533 |
| Australia True or False | 0 | - | 4.87 | 56,749 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,277 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,893 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,684 |
| Germany True or False? | 0 | - | 4.61 | 48,727 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,571 |
| England or Wales? | 0 | - | 4.94 | 45,581 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,970 |
| Official European Union Languages | 0 | - | 4.97 | 238,029 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,564 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,319 |
| Slavic Languages | 0 | - | 4.68 | 54,247 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,858 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,739 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,610 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,352 |
| Celtic Nations | 0 | - | 4.69 | 46,901 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,210 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,883 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,311 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,859 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,924 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,431 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,842 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,792 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,634 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,137 |
| States of Germany | 0 | - | 4.96 | 151,745 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,836 |
| Regions of Italy | 0 | - | 4.92 | 75,490 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,722 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,572 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,947 |
| Champions League Winners | 0 | - | 4.92 | 1,003,262 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,377 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,898 |
| France Multiple Choice | 0 | - | 4.38 | 40,698 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,654 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,452 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,174 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,551 |
| Departments of France | 0 | - | 4.93 | 53,685 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,510 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,650 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,544 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,464 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,282 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,310 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,723 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,700 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,845 |
| Name that Greek Letter | 0 | - | 4.93 | 322,999 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,568 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,410 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,784 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,215 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,812 |
| History of Russia Quiz | 0 | - | 4.49 | 31,874 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,020 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,880 |
| The Trojan War | 0 | - | 4.83 | 39,630 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,478 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,434 |
| History of Italy | 0 | - | 4.55 | 31,928 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,390 |
| Roman Emperors | 0 | - | 4.95 | 119,602 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,603 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,154 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,556 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,643 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,266 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,462 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,220 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,971 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,050 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,021 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,155 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,490 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,181 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,746 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,058 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,725 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,191 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,850 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,136 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,164 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,294 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,345 |
| Capitals of French Regions | 0 | - | 4.45 | 16,032 |
| Regions of France | 0 | - | 4.75 | 120,333 |
| France Immigration by Country | 0 | - | 4.70 | 76,369 |
| Famous Germans | 0 | - | 4.50 | 55,119 |
| German Groups of Things | 0 | - | 4.46 | 38,424 |
| Capitals of German States | 0 | - | 4.74 | 28,919 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,270 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,842 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,374 |
| Ancient Greek Words | 0 | - | 4.93 | 111,291 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,217 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,195 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,226 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,033 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,399 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,520 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,414 |
| Africa Map Quiz | 0 | - | 5.00 | 2,113,981 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,142 |
| Australian Capitals | 0 | - | 4.92 | 62,689 |
| European Physical Geography | 0 | - | 4.26 | 33,454 |
| Geography of Russia | 0 | - | 4.57 | 21,503 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Geography of the French Empire | 0 | - | 4.45 | 27,017 |
| The French Revolution | 0 | - | 4.46 | 23,894 |
| History of France | 0 | - | 4.59 | 56,782 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,455 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,927 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,976 |
| The Vikings! | 0 | - | 4.46 | 28,314 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,010 |
| The Portuguese Empire | 0 | - | 4.58 | 12,043 |
| American to British Word Translation | 0 | - | 4.14 | 138,683 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,851 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,541 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,290 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,568 |
| Champions League Top 4 | 0 | - | 4.77 | 135,597 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,184 |
| Asia Map Quiz | 0 | - | 4.99 | 913,955 |
| North Korea... or South Korea? | 0 | - | 4.47 | 80,582 |
| Countries of Africa | 0 | - | 5.00 | 2,528,564 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,527 |
| African East Coast | 0 | - | 4.96 | 95,753 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,566 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,419 |
| Australia Map Quiz | 0 | - | 4.95 | 343,718 |
| United States Map Quiz | 0 | - | 4.98 | 4,152,798 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,619 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,550 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,400 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,823 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,156 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,501 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,673 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,324 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,175 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,840 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,445 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,701 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,594 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,960 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,716 |
| European Geography A-Z | 0 | - | 4.29 | 49,180 |
| Country Codes of Europe | 0 | - | 3.43 | 13,699 |
| The Only European Country ... | 0 | - | 4.91 | 215,842 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,666 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,020 |
| Austria... or Australia? | 0 | - | 4.68 | 104,211 |
| Famous French People | 0 | - | 4.06 | 34,315 |
| Presidents of France | 0 | - | 4.25 | 24,018 |
| Word Chain - France | 0 | - | 4.38 | 42,727 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,921 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,868 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,328 |
| Italian Foods | 0 | - | 4.30 | 72,605 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,233 |
| The Mafia Quiz | 0 | - | 4.46 | 23,292 |
| History of The Netherlands | 0 | - | 4.46 | 17,401 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,006 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 67,054 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,565 |
| British Spellings | 0 | - | 4.06 | 99,395 |
| British Groups of Things | 0 | - | 4.25 | 82,823 |
| British Acronyms | 0 | - | 4.39 | 45,744 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,012 |
| British Monopoly Board | 0 | - | 4.52 | 41,133 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,646 |
| Geography of Scotland | 0 | - | 4.63 | 21,580 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,556 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,566 |
| Astronomy True or False | 0 | - | 4.39 | 36,402 |
| Bhutan... or Nepal? | 0 | - | 4.59 | 17,736 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,845 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,777 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,577 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,341 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,940 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,020 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,089 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,570 |
| African Island Countries | 0 | - | 4.96 | 101,368 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,971 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,087 |
| Australian States and Territories | 0 | - | 4.96 | 141,612 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,217 |
| Flags of North and South America | 0 | - | 4.99 | 371,602 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,491 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,049 |
