| European Countries by First 2 Letters | 0 | - | 4.95 | 532,218 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,390 |
| History of Russia Quiz | 0 | - | 4.47 | 31,997 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,855 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,664 |
| Official European Union Languages | 0 | - | 4.97 | 239,647 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,557 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,593 |
| Geography of Russia | 0 | - | 4.57 | 21,591 |
| Slavic Languages | 0 | - | 4.68 | 54,663 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,278 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,035 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,492 |
| Celtic Nations | 0 | - | 4.61 | 47,082 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,960 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,513 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,427 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,084 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,717 |
| Slavic Countries | 0 | - | 4.96 | 112,298 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,671 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,400 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,077 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,648 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,704 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,727 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,448 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,882 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,297 |
| Word Chain - Russia | 0 | - | 4.33 | 15,791 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,419 |
| States of Germany | 0 | - | 4.95 | 154,293 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,632 |
| Regions of Italy | 0 | - | 4.92 | 76,940 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,751 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,200 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,702 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,831 |
| Champions League Winners | 0 | - | 4.92 | 1,015,081 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,562 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,745 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,720 |
| Departments of France | 0 | - | 4.93 | 55,035 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,724 |
| England or Wales? | 0 | - | 4.94 | 45,935 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,932 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,732 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,715 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,242 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 120,049 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,726 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,610 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,882 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,356 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,052 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,358 |
| Name that Greek Letter | 0 | - | 4.93 | 324,853 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,754 |
| Famous Russians | 0 | - | 4.16 | 23,904 |
| Russian Inventions | 0 | - | 4.39 | 13,012 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,653 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,513 |
| The Trojan War | 0 | - | 4.83 | 39,955 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,837 |
| History of Italy | 0 | - | 4.55 | 32,135 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,296 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,549 |
| Roman Emperors | 0 | - | 4.95 | 121,087 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,808 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,412 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,525 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,236 |
| Australian Capitals | 0 | - | 4.92 | 62,822 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,809 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,147 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,433 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,147 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,796 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,185 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,911 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,427 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,639 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,360 |
| Europe Map Quiz | 0 | - | 5.00 | 4,784,805 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,489 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,148 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,433 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,402 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,257 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,507 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,706 |
| Capitals of French Regions | 0 | - | 4.45 | 16,170 |
| Regions of France | 0 | - | 4.70 | 121,939 |
| France Immigration by Country | 0 | - | 4.70 | 76,890 |
| Famous Germans | 0 | - | 4.50 | 55,750 |
| German Groups of Things | 0 | - | 4.47 | 38,619 |
| Capitals of German States | 0 | - | 4.74 | 29,059 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,529 |
| Germany True or False? | 0 | - | 4.61 | 48,996 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,426 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,443 |
| Ancient Greek Words | 0 | - | 4.93 | 112,373 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,367 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,310 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,705 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,396 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,738 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,558 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,798 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,133 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,706 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,733 |
| European Physical Geography | 0 | - | 4.26 | 33,587 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,107 |
| History of Austria | 0 | - | 4.70 | 17,967 |
| Geography of the French Empire | 0 | - | 4.45 | 27,207 |
| The French Revolution | 0 | - | 4.47 | 24,133 |
| France Multiple Choice | 0 | - | 4.39 | 40,832 |
| History of France | 0 | - | 4.61 | 57,555 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,554 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,506 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,478 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,358 |
| The Portuguese Empire | 0 | - | 4.58 | 12,099 |
| American to British Word Translation | 0 | - | 4.14 | 139,630 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,042 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,331 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,786 |
| Champions League Top 4 | 0 | - | 4.78 | 138,768 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,943 |
| Asia Map Quiz | 0 | - | 4.99 | 924,335 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,576 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,385 |
| Australia Map Quiz | 0 | - | 4.95 | 346,022 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,013 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,750 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,884 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,585 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,041 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,856 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,171 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,957 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,672 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,359 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,984 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,401 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,449 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,861 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,738 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,966 |
| European Geography A-Z | 0 | - | 4.29 | 49,464 |
| Country Codes of Europe | 0 | - | 3.43 | 13,804 |
| The Only European Country ... | 0 | - | 4.91 | 218,731 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,380 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,023 |
| Austria... or Australia? | 0 | - | 4.68 | 104,737 |
| Famous French People | 0 | - | 4.07 | 36,057 |
| Presidents of France | 0 | - | 4.25 | 24,323 |
| Word Chain - France | 0 | - | 4.38 | 42,919 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,208 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,030 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,945 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,661 |
| Italian Foods | 0 | - | 4.30 | 73,214 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,613 |
| The Mafia Quiz | 0 | - | 4.46 | 23,429 |
| History of The Netherlands | 0 | - | 4.46 | 17,542 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,110 |
| Canary Islands | 0 | - | 4.62 | 17,519 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,024 |
| British Spellings | 0 | - | 4.06 | 99,588 |
| British Groups of Things | 0 | - | 4.26 | 82,994 |
| British Acronyms | 0 | - | 4.40 | 45,924 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,098 |
| British Monopoly Board | 0 | - | 4.52 | 41,254 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,093 |
| Geography of Scotland | 0 | - | 4.63 | 21,725 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,841 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,860 |
| Countries of Africa | 0 | - | 5.00 | 2,556,729 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,756 |
| African East Coast | 0 | - | 4.96 | 96,680 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,530 |
| Australian States and Territories | 0 | - | 4.96 | 142,769 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,478 |
| Australia True or False | 0 | - | 4.87 | 57,117 |
| Flags of North and South America | 0 | - | 4.99 | 376,498 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,921 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,729 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,557 |
| South America Map Quiz | 0 | - | 5.00 | 1,555,761 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,739 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,357 |
| North America Map Quiz | 0 | - | 4.98 | 251,649 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,952 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,761 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,197 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,520 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,142 |
