| Australian Capitals | 0 | - | 4.92 | 62,598 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,638 |
| Official European Union Languages | 0 | - | 4.97 | 237,059 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,775 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,587 |
| Australia True or False | 0 | - | 4.87 | 56,536 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,398 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,682 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,759 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,268 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,953 |
| Australia Country Quiz | 0 | - | 4.43 | 69,323 |
| Regions of New Zealand | 0 | - | 4.85 | 28,232 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,100 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,621 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,675 |
| Slavic Languages | 0 | - | 4.67 | 54,024 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,254 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,439 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,993 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,222 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,342 |
| Top World Languages | 0 | - | 4.92 | 813,860 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,061 |
| Countries by Official Language | 0 | - | 4.95 | 192,896 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,598 |
| Places in their Native Language #2 | 0 | - | 4.83 | 123,025 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,299 |
| Countries in their Native Language | 0 | - | 4.99 | 196,749 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,923 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,551 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,925 |
| Non-Stop Flights to New Zealand | 0 | - | 4.46 | 47,749 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,503 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,791 |
| Asia Map Quiz | 0 | - | 4.99 | 907,772 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,049 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,892 |
| Word Chain - Australia | 0 | - | 4.37 | 38,017 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,733 |
| Countries of Africa | 0 | - | 5.00 | 2,510,335 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,891 |
| African East Coast | 0 | - | 4.96 | 95,134 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,010 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,890 |
| Australia Map Quiz | 0 | - | 4.94 | 342,666 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,314 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,255 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,192 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,515 |
| Celtic Nations | 0 | - | 4.69 | 46,826 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,570 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,717 |
| The Only European Country ... | 0 | - | 4.91 | 214,094 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,729 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,585 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,569 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,636 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,604 |
| Spanish to English Country Names | 0 | - | 4.85 | 32,136 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,727 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,331 |
| German-Speaking Countries | 0 | - | 4.89 | 123,540 |
| Italian Name Translation | 0 | - | 4.81 | 45,195 |
| French-Speaking Countries | 0 | - | 4.85 | 268,974 |
| Officially Recognized Languages of India | 0 | - | 4.38 | 31,088 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,472 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,732 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,642 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,366 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,555 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,254 |
| African Island Countries | 0 | - | 4.96 | 100,861 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,829 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,636 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,986 |
| Australian States and Territories | 0 | - | 4.96 | 140,986 |
| Famous Australians by Description | 0 | - | 4.23 | 27,658 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,036 |
| Australian Slang | 0 | - | 4.25 | 28,491 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,187 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,231 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,348 |
| North America Map Quiz | 0 | - | 4.98 | 244,810 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,294 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,533 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,252 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,783 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,390 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,547 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,530 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,914 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,044 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,188 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,661 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,356 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,283 |
| Slavic Countries | 0 | - | 4.96 | 110,926 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,067 |
| Languages of Spain | 0 | - | 4.36 | 23,162 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,411 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,872 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,482 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,330 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,854 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,592 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,931 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,228 |
| Countries of the Middle East | 0 | - | 4.96 | 199,120 |
| English Speaking Countries | 0 | - | 4.64 | 356,140 |
| Category Elimination - Official Languages | 0 | - | 4.98 | 69,175 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.96 | 124,296 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,868 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,347 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,017 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,192 |
| Flags of North and South America | 0 | - | 4.99 | 367,946 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,811 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,851 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,303 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,342 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,374 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,647 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,186 |
| Counties of England | 0 | - | 4.97 | 789,883 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,477 |
| Flags of Asia Quiz | 0 | - | 4.99 | 606,280 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.75 | 127,310 |
| States of India | 0 | - | 4.94 | 190,524 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,020 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,284 |
| The Only African Country ... | 0 | - | 4.99 | 128,414 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,808 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,150 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,503 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,172 |
| Flags of Oceania | 0 | - | 5.00 | 255,621 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,499 |
| The Only American Country ... | 0 | - | 4.92 | 120,837 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,410 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,367 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,000 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,068 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,952 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,084 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,010 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,438 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,933 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,121 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,541 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,416 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,414 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,094 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,498 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,006 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,296 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,896 |
| Monarchies of Europe | 0 | - | 4.90 | 97,393 |
| European Countries with One Border | 0 | - | 4.97 | 181,729 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,633 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,359 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,052 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,257 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,268 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,311 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,823 |
| States of Germany | 0 | - | 4.96 | 150,277 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,103 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,570 |
| Regions of Italy | 0 | - | 4.92 | 74,826 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,894 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,477 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,330 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,378 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,095 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,226 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,552 |
| Champions League Winners | 0 | - | 4.92 | 997,305 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,048 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,141 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,453 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,969 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,499 |
| Monarchies of Asia | 0 | - | 4.97 | 70,645 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,465 |
| Provinces of Turkey | 0 | - | 4.95 | 201,614 |
| Provinces of China | 0 | - | 4.97 | 200,476 |
| Japanese Prefectures | 0 | - | 4.98 | 134,793 |
| Name an Official Language A-Z | 0 | - | 4.91 | 174,879 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,279 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,000 |
| Kazakhstan Country Quiz | 0 | - | 4.82 | 34,484 |
| States of India Map Quiz | 0 | - | 4.82 | 26,079 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,815 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,389 |
| African Great Lakes | 0 | - | 4.82 | 65,265 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,917 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,422 |
| Name a Valid African Country | 0 | - | 4.98 | 153,043 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,516 |
