| European Countries by First 2 Letters | 0 | - | 4.95 | 530,249 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,764 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,273 |
| Official European Union Languages | 0 | - | 4.97 | 238,808 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,053 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,748 |
| Geography of Russia | 0 | - | 4.57 | 21,550 |
| Slavic Languages | 0 | - | 4.68 | 54,434 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,072 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,893 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,413 |
| Celtic Nations | 0 | - | 4.69 | 46,975 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,489 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,031 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,569 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,483 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,342 |
| Slavic Countries | 0 | - | 4.96 | 111,821 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,429 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,149 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,566 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,312 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,550 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,920 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,200 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,814 |
| Word Chain - Russia | 0 | - | 4.33 | 15,770 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,028 |
| States of Germany | 0 | - | 4.95 | 152,983 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,211 |
| Regions of Italy | 0 | - | 4.92 | 76,139 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,354 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,238 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,341 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,731 |
| Champions League Winners | 0 | - | 4.91 | 1,008,958 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,730 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,213 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,468 |
| Departments of France | 0 | - | 4.93 | 54,361 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,598 |
| England or Wales? | 0 | - | 4.94 | 45,766 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,835 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,629 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,669 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,821 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,429 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,643 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,505 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,578 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,322 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,834 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,441 |
| Name that Greek Letter | 0 | - | 4.93 | 324,071 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,491 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,261 |
| Famous Russians | 0 | - | 4.16 | 23,856 |
| The Trojan War | 0 | - | 4.83 | 39,778 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,089 |
| History of Italy | 0 | - | 4.55 | 32,037 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,908 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,618 |
| Roman Emperors | 0 | - | 4.95 | 120,298 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,708 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,284 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,522 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,525 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,975 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,223 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,837 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,674 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,902 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,682 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,982 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,828 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,121 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,590 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,546 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,329 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,994 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,276 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,278 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,720 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,522 |
| Capitals of French Regions | 0 | - | 4.45 | 16,096 |
| Regions of France | 0 | - | 4.72 | 121,097 |
| France Immigration by Country | 0 | - | 4.70 | 76,639 |
| Famous Germans | 0 | - | 4.50 | 55,472 |
| German Groups of Things | 0 | - | 4.46 | 38,504 |
| Capitals of German States | 0 | - | 4.74 | 28,979 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,379 |
| Germany True or False? | 0 | - | 4.61 | 48,861 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,106 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,589 |
| Ancient Greek Words | 0 | - | 4.93 | 111,825 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,696 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,464 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,321 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,380 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,764 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,953 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,710 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,428 |
| European Physical Geography | 0 | - | 4.26 | 33,532 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,993 |
| History of Austria | 0 | - | 4.70 | 17,891 |
| Geography of the French Empire | 0 | - | 4.45 | 27,147 |
| The French Revolution | 0 | - | 4.47 | 24,043 |
| France Multiple Choice | 0 | - | 4.39 | 40,757 |
| History of France | 0 | - | 4.59 | 57,212 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,701 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,233 |
| The Vikings! | 0 | - | 4.46 | 28,365 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,189 |
| The Portuguese Empire | 0 | - | 4.58 | 12,080 |
| American to British Word Translation | 0 | - | 4.14 | 139,241 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,932 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,119 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,698 |
| Champions League Top 4 | 0 | - | 4.77 | 137,068 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,249 |
| Asia Map Quiz | 0 | - | 4.99 | 918,674 |
| Countries of Africa | 0 | - | 5.00 | 2,542,630 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,023 |
| African East Coast | 0 | - | 4.96 | 96,203 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,070 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,839 |
| Australia Map Quiz | 0 | - | 4.95 | 344,941 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,293 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,652 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,717 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,404 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,854 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,929 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,311 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,189 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,879 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,663 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,301 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,839 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,011 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,728 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,287 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,565 |
| European Geography A-Z | 0 | - | 4.29 | 49,345 |
| Country Codes of Europe | 0 | - | 3.43 | 13,741 |
| The Only European Country ... | 0 | - | 4.91 | 217,192 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,449 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,253 |
| Austria... or Australia? | 0 | - | 4.68 | 104,459 |
| Famous French People | 0 | - | 4.07 | 35,780 |
| Presidents of France | 0 | - | 4.25 | 24,189 |
| Word Chain - France | 0 | - | 4.38 | 42,817 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,054 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,940 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,348 |
| Italian Foods | 0 | - | 4.30 | 72,892 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,390 |
| The Mafia Quiz | 0 | - | 4.46 | 23,359 |
| History of The Netherlands | 0 | - | 4.46 | 17,467 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,062 |
| Canary Islands | 0 | - | 4.62 | 17,489 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,791 |
| British Spellings | 0 | - | 4.06 | 99,491 |
| British Groups of Things | 0 | - | 4.25 | 82,899 |
| British Acronyms | 0 | - | 4.40 | 45,829 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,051 |
| British Monopoly Board | 0 | - | 4.52 | 41,186 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,904 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,174 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,375 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,053 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,620 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,240 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,741 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,409 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,393 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,740 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,306 |
| African Island Countries | 0 | - | 4.96 | 101,800 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,703 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,385 |
| Australian States and Territories | 0 | - | 4.96 | 142,166 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,344 |
| Australia True or False | 0 | - | 4.87 | 56,928 |
| Flags of North and South America | 0 | - | 4.99 | 373,943 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,689 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,346 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,026 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,125 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,625 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,066 |
| North America Map Quiz | 0 | - | 4.98 | 249,091 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,782 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,363 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,296 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,275 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,939 |
