| Island Countries | 0 | - | 4.99 | 710,081 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,289 |
| European Countries by Clue | 0 | - | 4.92 | 183,569 |
| Countries by Military Spending | 0 | - | 4.93 | 177,598 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,159 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,393,930 |
| US States Quiz | 0 | - | 5.00 | 16,855,412 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,618,985 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,230 |
| World Capitals Quiz | 0 | - | 5.00 | 5,068,462 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,401 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,825,703 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,526 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,536,036 |
| Random Capital to Country | 0 | - | 4.99 | 2,589,686 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,761,919 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,494 |
| All Country Flags of the World | 0 | - | 5.00 | 3,656,972 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,100,060 |
| Countries that Start with B | 0 | - | 4.95 | 2,292,572 |
| Countries that Start with A | 0 | - | 4.98 | 2,160,813 |
| Countries of Africa | 0 | - | 5.00 | 2,533,810 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,671 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,688,170 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,763 |
| Countries that Start with C | 0 | - | 4.96 | 1,820,602 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,068 |
| Countries that Start with S | 0 | - | 4.98 | 1,753,520 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,454 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,584,635 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,184 |
| Countries that Start with G | 0 | - | 4.97 | 1,501,947 |
| Countries that Start with M | 0 | - | 4.97 | 1,380,606 |
| Countries that Start with E | 0 | - | 4.95 | 1,376,005 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,382 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,881 |
| Countries that Start with I | 0 | - | 4.92 | 1,287,125 |
| Countries that Start with P | 0 | - | 4.94 | 1,215,221 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,913 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,307 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,782 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,242,263 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,808 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,788 |
| Random Country to Capital | 0 | - | 4.98 | 919,505 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,093 |
| Biggest Cities in the United States | 0 | - | 4.94 | 977,129 |
| Asia Map Quiz | 0 | - | 4.99 | 915,782 |
| Countries that Start with U | 0 | - | 4.97 | 903,920 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,632 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,022,030 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,042 |
| Counties of England | 0 | - | 4.97 | 795,878 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,769 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,549 |
| Top World Languages | 0 | - | 4.92 | 821,190 |
| Countries of South America | 0 | - | 5.00 | 923,999 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,823 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,015 |
| Countries that Start with K | 0 | - | 4.97 | 815,018 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,274 |
| US States with an Empty Map | 0 | - | 5.00 | 623,967 |
| Countries that Start with V | 0 | - | 4.98 | 608,906 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,073 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,598 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,693 |
| Countries that Start with D | 0 | - | 4.96 | 708,613 |
| Countries That Border Russia | 0 | - | 4.98 | 461,462 |
| One Border Countries | 0 | - | 4.98 | 468,129 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,535 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,976 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,717 |
| Countries with Four Letters | 0 | - | 4.99 | 422,010 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,190 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,142 |
| Countries Bordering France | 0 | - | 4.83 | 402,276 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,017 |
| Northernmost Countries | 0 | - | 4.99 | 360,851 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,237 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,815 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,125 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,832 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,375 |
| Landlocked Countries | 0 | - | 4.99 | 419,697 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,897 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,205 |
| Australia Map Quiz | 0 | - | 4.95 | 344,179 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,860 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,993 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,753 |
| Countries that Start with H | 0 | - | 4.96 | 603,932 |
| Countries that Start with J | 0 | - | 4.98 | 601,685 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,009 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,190 |
| "Land" Countries | 0 | - | 4.98 | 335,985 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,432 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,360 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,010 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,769 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,482 |
| Flags of Africa Quiz | 0 | - | 5.00 | 470,411 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,251 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,296 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,993 |
| Countries with Z | 0 | - | 4.98 | 290,361 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,741 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,595 |
| Flags of North and South America | 0 | - | 4.99 | 372,589 |
| EU Countries Quiz | 0 | - | 4.99 | 273,448 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,231 |
| Countries that Border China | 0 | - | 4.96 | 263,016 |
| French-Speaking Countries | 0 | - | 4.85 | 270,348 |
| Countries with Five Letters | 0 | - | 4.96 | 280,965 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,084 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,881 |
| Every Country Shape | 0 | - | 5.00 | 464,616 |
| Europe Capital to Country | 0 | - | 4.99 | 249,845 |
| Longest International Borders | 0 | - | 4.99 | 264,807 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,500 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,238 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,656 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,272 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,814 |
| Megacities on a World Map | 0 | - | 4.98 | 254,084 |
| World Currency Quiz | 0 | - | 4.91 | 302,500 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,654 |
| NATO Countries | 0 | - | 4.98 | 279,770 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,805 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,027 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,391 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,769 |
| Official Cities in the UK | 0 | - | 4.89 | 283,390 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,846 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,883 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,837 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,876 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,865 |
| Countries with Megacities | 0 | - | 4.99 | 262,369 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,184 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,697 |
| World Capitals by Map | 0 | - | 5.00 | 286,019 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,611 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,721 |
| World's Busiest Airports | 0 | - | 4.96 | 233,078 |
| Country Chain | 0 | - | 4.96 | 216,974 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,149 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,598 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,842 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,294 |
| Independence from Whom | 0 | - | 4.99 | 211,531 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,928 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,543 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,382 |
| Countries with Six Letters | 0 | - | 4.94 | 212,679 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,662 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,142 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,328 |
| Flags of Oceania | 0 | - | 5.00 | 258,674 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,130 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,271 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,571 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,207 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,408 |
| Countries in their Native Language | 0 | - | 4.99 | 198,334 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,912 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,035 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,009 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,406 |
| Monarchies of the World | 0 | - | 4.94 | 168,457 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,870 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,959 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,480 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,044 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,919 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,645 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,753 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,439 |
| Countries That End in Y | 0 | - | 4.91 | 185,681 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,234 |
| Olympic Host Countries | 0 | - | 4.98 | 200,582 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,572 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,460 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,871 |
| Every European Country Shape | 0 | - | 4.96 | 201,478 |
| Countries of the Middle East | 0 | - | 4.96 | 200,979 |
| Countries by Official Language | 0 | - | 4.95 | 194,793 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,876 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,296 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,309 |
| Counties of Ireland | 0 | - | 4.92 | 195,012 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,789 |
| Countries Bordering India | 0 | - | 4.98 | 163,385 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,535 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,827 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,806 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,496 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,792 |
| European Cities by Clue | 0 | - | 4.70 | 89,037 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,156 |
| Islands by Country #2 | 0 | - | 4.80 | 77,373 |
