| European Countries by First 2 Letters | 0 | - | 4.95 | 530,921 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,968 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,794 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,398 |
| Official European Union Languages | 0 | - | 4.97 | 239,076 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,235 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,502 |
| Slavic Languages | 0 | - | 4.68 | 54,513 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,148 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,938 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,444 |
| Celtic Nations | 0 | - | 4.69 | 47,008 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,709 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,652 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,819 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,690 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,493 |
| Slavic Countries | 0 | - | 4.96 | 111,989 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,520 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,249 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,760 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,759 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,216 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,469 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,467 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,450 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,269 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,187 |
| States of Germany | 0 | - | 4.95 | 153,525 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,359 |
| Regions of Italy | 0 | - | 4.92 | 76,409 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,512 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,641 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,478 |
| Champions League Winners | 0 | - | 4.92 | 1,010,837 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,630 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,037 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,510 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,676 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,953 |
| Austria... or Australia? | 0 | - | 4.68 | 104,561 |
| Departments of France | 0 | - | 4.93 | 54,604 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,636 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,213 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,668 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,951 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,821 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,685 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,906 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,592 |
| Name that Greek Letter | 0 | - | 4.93 | 324,326 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,682 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,529 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,757 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,481 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,445 |
| Word Chain - Russia | 0 | - | 4.33 | 15,776 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,429 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,268 |
| The Trojan War | 0 | - | 4.83 | 39,844 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,396 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,711 |
| History of Italy | 0 | - | 4.55 | 32,084 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,051 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,965 |
| Roman Emperors | 0 | - | 4.95 | 120,528 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,744 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,902 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,749 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,095 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,496 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,882 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,436 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,104 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,481 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,282 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,098 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,350 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,936 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,320 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,387 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,044 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,344 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,319 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,963 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,580 |
| Capitals of French Regions | 0 | - | 4.45 | 16,123 |
| Regions of France | 0 | - | 4.70 | 121,407 |
| France Immigration by Country | 0 | - | 4.70 | 76,717 |
| Famous Germans | 0 | - | 4.50 | 55,566 |
| German Groups of Things | 0 | - | 4.46 | 38,549 |
| Capitals of German States | 0 | - | 4.74 | 29,004 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,418 |
| Germany True or False? | 0 | - | 4.61 | 48,918 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,193 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,234 |
| Ancient Greek Words | 0 | - | 4.93 | 112,036 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,902 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,541 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,365 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,507 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,502 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,715 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,321 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,183 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,734 |
| Australian Capitals | 0 | - | 4.92 | 62,776 |
| European Physical Geography | 0 | - | 4.26 | 33,549 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,077 |
| France Multiple Choice | 0 | - | 4.39 | 40,783 |
| History of France | 0 | - | 4.61 | 57,346 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,357 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,318 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,246 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| American to British Word Translation | 0 | - | 4.14 | 139,397 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,970 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,204 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,450 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,391 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,739 |
| Champions League Top 4 | 0 | - | 4.77 | 137,543 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,060 |
| Asia Map Quiz | 0 | - | 4.99 | 920,592 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,966 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,034 |
| Australia Map Quiz | 0 | - | 4.95 | 345,389 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,811 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,004 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,771 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,826 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,290 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,345 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,692 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,542 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,227 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,974 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,605 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,085 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,211 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,773 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,493 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,891 |
| European Geography A-Z | 0 | - | 4.29 | 49,386 |
| Country Codes of Europe | 0 | - | 3.43 | 13,764 |
| The Only European Country ... | 0 | - | 4.91 | 217,711 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,789 |
| European Geographic Groups of Four | 0 | - | 4.58 | 16,274 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,340 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,329 |
| Famous French People | 0 | - | 4.07 | 35,912 |
| Presidents of France | 0 | - | 4.25 | 24,234 |
| Word Chain - France | 0 | - | 4.38 | 42,866 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,114 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,866 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,944 |
| Italian Foods | 0 | - | 4.30 | 73,006 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,461 |
| The Mafia Quiz | 0 | - | 4.46 | 23,391 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,076 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,217 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,864 |
| British Spellings | 0 | - | 4.06 | 99,527 |
| British Groups of Things | 0 | - | 4.25 | 82,930 |
| British Acronyms | 0 | - | 4.40 | 45,869 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,063 |
| British Monopoly Board | 0 | - | 4.52 | 41,209 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,993 |
| Geography of Scotland | 0 | - | 4.63 | 21,677 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,433 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,280 |
| Countries of Africa | 0 | - | 5.00 | 2,547,582 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,194 |
| African East Coast | 0 | - | 4.96 | 96,387 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,239 |
| Astronomy True or False | 0 | - | 4.39 | 36,541 |
| Australian States and Territories | 0 | - | 4.96 | 142,360 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,385 |
| Australia True or False | 0 | - | 4.87 | 56,992 |
| Flags of North and South America | 0 | - | 4.99 | 374,825 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,752 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,463 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,209 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,399 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,655 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,739 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,825 |
| North America Map Quiz | 0 | - | 4.98 | 249,772 |
