| European Countries by First 2 Letters | 0 | - | 4.95 | 531,054 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,117 |
| History of Russia Quiz | 0 | - | 4.47 | 31,972 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,431 |
| Official European Union Languages | 0 | - | 4.97 | 239,152 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,267 |
| England or Wales? | 0 | - | 4.94 | 45,838 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,629 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Slavic Languages | 0 | - | 4.68 | 54,530 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,162 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,947 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,455 |
| Celtic Nations | 0 | - | 4.69 | 47,023 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,750 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,740 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,030 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,739 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,512 |
| Slavic Countries | 0 | - | 4.96 | 112,019 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,538 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,261 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,020 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,775 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,238 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,493 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,647 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,567 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,492 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,340 |
| Word Chain - Russia | 0 | - | 4.33 | 15,779 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,040 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,219 |
| States of Germany | 0 | - | 4.95 | 153,628 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,380 |
| Regions of Italy | 0 | - | 4.92 | 76,453 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,528 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,717 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,499 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,774 |
| Champions League Winners | 0 | - | 4.92 | 1,011,266 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,599 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,784 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,030 |
| Departments of France | 0 | - | 4.93 | 54,651 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,648 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,286 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,670 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,680 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,973 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,915 |
| Austria... or Australia? | 0 | - | 4.68 | 104,580 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,686 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,543 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,699 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,329 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,941 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,734 |
| Name that Greek Letter | 0 | - | 4.93 | 324,388 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,494 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,486 |
| Famous Russians | 0 | - | 4.16 | 23,882 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,457 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,307 |
| The Trojan War | 0 | - | 4.83 | 39,868 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,448 |
| History of Italy | 0 | - | 4.55 | 32,090 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,074 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,200 |
| Roman Emperors | 0 | - | 4.95 | 120,608 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,754 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,331 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,961 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,795 |
| Australian Capitals | 0 | - | 4.92 | 62,780 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,119 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,524 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,904 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,451 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,118 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,511 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,295 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,115 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,367 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,955 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,290 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,402 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,056 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,349 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,323 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,973 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,589 |
| Capitals of French Regions | 0 | - | 4.45 | 16,129 |
| Regions of France | 0 | - | 4.70 | 121,472 |
| France Immigration by Country | 0 | - | 4.70 | 76,739 |
| Famous Germans | 0 | - | 4.50 | 55,586 |
| German Groups of Things | 0 | - | 4.46 | 38,560 |
| Capitals of German States | 0 | - | 4.74 | 29,008 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,430 |
| Germany True or False? | 0 | - | 4.61 | 48,924 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,231 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,353 |
| Ancient Greek Words | 0 | - | 4.93 | 112,074 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,933 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,568 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,367 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,537 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,504 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,421 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,214 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,312 |
| European Physical Geography | 0 | - | 4.26 | 33,559 |
| History of Austria | 0 | - | 4.70 | 17,928 |
| Geography of the French Empire | 0 | - | 4.45 | 27,177 |
| The French Revolution | 0 | - | 4.47 | 24,083 |
| France Multiple Choice | 0 | - | 4.39 | 40,787 |
| History of France | 0 | - | 4.61 | 57,364 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,465 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,335 |
| The Vikings! | 0 | - | 4.46 | 28,379 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,254 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| American to British Word Translation | 0 | - | 4.14 | 139,420 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,976 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,214 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,457 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,398 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,745 |
| Champions League Top 4 | 0 | - | 4.77 | 137,681 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,242 |
| Asia Map Quiz | 0 | - | 4.99 | 921,227 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,517 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,061 |
| Australia Map Quiz | 0 | - | 4.95 | 345,463 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,246 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,072 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,784 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,916 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,376 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,361 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,704 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,558 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,243 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,986 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,612 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,094 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,221 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,782 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,500 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,241 |
| European Geography A-Z | 0 | - | 4.29 | 49,393 |
| Country Codes of Europe | 0 | - | 3.43 | 13,765 |
| The Only European Country ... | 0 | - | 4.91 | 217,825 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,865 |
| European Geographic Groups of Four | 0 | - | 4.58 | 17,642 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,349 |
| Famous French People | 0 | - | 4.07 | 35,931 |
| Presidents of France | 0 | - | 4.25 | 24,249 |
| Word Chain - France | 0 | - | 4.38 | 42,869 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,126 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,975 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,878 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,017 |
| Italian Foods | 0 | - | 4.30 | 73,029 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,484 |
| The Mafia Quiz | 0 | - | 4.46 | 23,395 |
| History of The Netherlands | 0 | - | 4.46 | 17,503 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,084 |
| Canary Islands | 0 | - | 4.62 | 17,502 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,877 |
| British Spellings | 0 | - | 4.06 | 99,532 |
| British Groups of Things | 0 | - | 4.25 | 82,940 |
| British Acronyms | 0 | - | 4.40 | 45,878 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,067 |
| British Monopoly Board | 0 | - | 4.52 | 41,211 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,001 |
| Geography of Scotland | 0 | - | 4.63 | 21,684 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,518 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,438 |
| Countries of Africa | 0 | - | 5.00 | 2,548,398 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,364 |
| African East Coast | 0 | - | 4.96 | 96,415 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,271 |
| Australian States and Territories | 0 | - | 4.96 | 142,390 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,397 |
| Australia True or False | 0 | - | 4.87 | 57,006 |
| Flags of North and South America | 0 | - | 4.99 | 374,966 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,784 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,520 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,244 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,648 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,662 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,745 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,027,149 |
| North America Map Quiz | 0 | - | 4.98 | 249,905 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,845 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,348 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,321 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,379 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,009 |
