| European Countries by First 2 Letters | 0 | - | 4.95 | 532,576 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,835 |
| History of Russia Quiz | 0 | - | 4.47 | 32,007 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,875 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,751 |
| Official European Union Languages | 0 | - | 4.97 | 239,837 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,670 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,963 |
| Geography of Russia | 0 | - | 4.57 | 21,604 |
| Slavic Languages | 0 | - | 4.67 | 54,704 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,326 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,061 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,509 |
| Celtic Nations | 0 | - | 4.61 | 47,102 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,037 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,827 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,944 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,206 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,810 |
| Slavic Countries | 0 | - | 4.96 | 112,396 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,700 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,454 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,843 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,983 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,785 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,897 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,999 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,563 |
| Word Chain - Russia | 0 | - | 4.33 | 15,798 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,480 |
| States of Germany | 0 | - | 4.95 | 154,569 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,709 |
| Regions of Italy | 0 | - | 4.92 | 77,113 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,816 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,350 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,777 |
| Champions League Winners | 0 | - | 4.92 | 1,016,401 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,755 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,925 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,964 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,971 |
| Departments of France | 0 | - | 4.93 | 55,183 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,749 |
| England or Wales? | 0 | - | 4.94 | 45,975 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,195 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,748 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,720 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,346 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,411 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,963 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,094 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,084 |
| Name that Greek Letter | 0 | - | 4.93 | 325,019 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,742 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,631 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,862 |
| Famous Russians | 0 | - | 4.16 | 23,915 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,365 |
| Russian Inventions | 0 | - | 4.39 | 13,018 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,714 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,567 |
| The Trojan War | 0 | - | 4.83 | 39,997 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,986 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,589 |
| History of Italy | 0 | - | 4.55 | 32,154 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,393 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,601 |
| Roman Emperors | 0 | - | 4.95 | 121,237 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,827 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,428 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,755 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,426 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,237 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,640 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,079 |
| European Geography By Letter - D | 0 | - | 4.49 | 117,983 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,160 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,620 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,192 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,731 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,097 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,670 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,935 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,533 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,189 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,468 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,434 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,490 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,553 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,750 |
| Capitals of French Regions | 0 | - | 4.45 | 16,185 |
| Regions of France | 0 | - | 4.70 | 122,137 |
| France Immigration by Country | 0 | - | 4.70 | 76,944 |
| Famous Germans | 0 | - | 4.50 | 55,799 |
| German Groups of Things | 0 | - | 4.47 | 38,637 |
| Capitals of German States | 0 | - | 4.74 | 29,074 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,547 |
| Germany True or False? | 0 | - | 4.61 | 49,025 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,485 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,838 |
| Ancient Greek Words | 0 | - | 4.93 | 112,492 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,400 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,793 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,412 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,840 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,570 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,374 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,829 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,561 |
| Australian Capitals | 0 | - | 4.92 | 62,836 |
| European Physical Geography | 0 | - | 4.26 | 33,599 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,136 |
| History of Austria | 0 | - | 4.70 | 17,976 |
| Geography of the French Empire | 0 | - | 4.45 | 27,220 |
| The French Revolution | 0 | - | 4.47 | 24,148 |
| France Multiple Choice | 0 | - | 4.39 | 40,854 |
| History of France | 0 | - | 4.61 | 57,633 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,560 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,886 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,510 |
| The Vikings! | 0 | - | 4.46 | 28,408 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,393 |
| The Portuguese Empire | 0 | - | 4.58 | 12,107 |
| American to British Word Translation | 0 | - | 4.14 | 139,713 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,063 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,381 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,820 |
| Champions League Top 4 | 0 | - | 4.78 | 139,157 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,646 |
| Asia Map Quiz | 0 | - | 4.99 | 925,397 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,980 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,481 |
| Australia Map Quiz | 0 | - | 4.95 | 346,214 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,697 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,000 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,936 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,861 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,286 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,296 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,562 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,271 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,032 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,632 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,272 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,646 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,635 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,901 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,940 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,189 |
| European Geography A-Z | 0 | - | 4.29 | 49,488 |
| Country Codes of Europe | 0 | - | 3.45 | 13,834 |
| The Only European Country ... | 0 | - | 4.91 | 219,109 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,565 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,255 |
| Austria... or Australia? | 0 | - | 4.67 | 104,774 |
| Famous French People | 0 | - | 4.05 | 36,115 |
| Presidents of France | 0 | - | 4.25 | 24,343 |
| Word Chain - France | 0 | - | 4.38 | 42,942 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,245 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,050 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,971 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,894 |
| Italian Foods | 0 | - | 4.30 | 73,288 |
| Countries Italy Declared War On | 0 | - | 4.75 | 44,010 |
| The Mafia Quiz | 0 | - | 4.46 | 23,440 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,119 |
| Canary Islands | 0 | - | 4.62 | 17,543 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,895 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,084 |
| British Spellings | 0 | - | 4.06 | 99,610 |
| British Groups of Things | 0 | - | 4.26 | 83,021 |
| British Acronyms | 0 | - | 4.40 | 45,945 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,112 |
| British Monopoly Board | 0 | - | 4.52 | 41,273 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,133 |
| Geography of Scotland | 0 | - | 4.63 | 21,744 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,974 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,400 |
| Countries of Africa | 0 | - | 5.00 | 2,560,727 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,968 |
| African East Coast | 0 | - | 4.96 | 96,796 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,649 |
| Australian States and Territories | 0 | - | 4.96 | 142,887 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,506 |
| Australia True or False | 0 | - | 4.87 | 57,159 |
| Flags of North and South America | 0 | - | 4.99 | 377,179 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,993 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,843 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,688 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,886 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,762 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,832 |
| North America Map Quiz | 0 | - | 4.98 | 252,173 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,987 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,357 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,712 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,581 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,190 |
