| Island Countries | 0 | - | 4.99 | 707,336 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,060 |
| European Countries by Clue | 0 | - | 4.92 | 182,313 |
| Countries by Military Spending | 0 | - | 4.93 | 176,299 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,223 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,868,632 |
| US States Quiz | 0 | - | 5.00 | 16,684,240 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,650 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,155 |
| World Capitals Quiz | 0 | - | 5.00 | 5,027,104 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,369 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,415 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,620 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,037 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,704 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,362 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,100 |
| All Country Flags of the World | 0 | - | 5.00 | 3,596,113 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,727 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,460 |
| Countries that Start with A | 0 | - | 4.98 | 2,145,186 |
| Countries of Africa | 0 | - | 5.00 | 2,505,311 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,455 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,476 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,537 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,156 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,167 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,522 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,876 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,549 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,967 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,794 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,529 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,590 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,784 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,549 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,466 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,863 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,621 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,815 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,034 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,724 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,177 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,670 |
| Random Country to Capital | 0 | - | 4.98 | 910,785 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,635 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,493 |
| Asia Map Quiz | 0 | - | 4.99 | 906,136 |
| Countries that Start with U | 0 | - | 4.97 | 899,485 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,079 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,736 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,245 |
| Counties of England | 0 | - | 4.97 | 788,537 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,506 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,663 |
| Top World Languages | 0 | - | 4.92 | 812,243 |
| Countries of South America | 0 | - | 5.00 | 913,744 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,580 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,030 |
| Countries that Start with K | 0 | - | 4.96 | 808,795 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,970 |
| US States with an Empty Map | 0 | - | 5.00 | 618,307 |
| Countries that Start with V | 0 | - | 4.98 | 604,685 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,362 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,051 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,743 |
| Countries that Start with D | 0 | - | 4.96 | 700,758 |
| Countries That Border Russia | 0 | - | 4.98 | 458,634 |
| One Border Countries | 0 | - | 4.98 | 463,721 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,459 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,910 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,104 |
| Countries with Four Letters | 0 | - | 4.99 | 418,175 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,243 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,528 |
| Countries Bordering France | 0 | - | 4.85 | 397,521 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,340 |
| Northernmost Countries | 0 | - | 4.99 | 357,371 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,130 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,903 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,785 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,123 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,984 |
| Landlocked Countries | 0 | - | 4.99 | 413,061 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,929 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,115 |
| Australia Map Quiz | 0 | - | 4.94 | 342,278 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,560 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,342 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,112 |
| Countries that Start with H | 0 | - | 4.96 | 597,274 |
| Countries that Start with J | 0 | - | 4.98 | 595,355 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,070 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,574 |
| "Land" Countries | 0 | - | 4.98 | 333,475 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,280 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,610 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,450 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,026 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,190 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,512 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,605 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,114 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,816 |
| Countries with Z | 0 | - | 4.98 | 287,691 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,940 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,752 |
| Flags of North and South America | 0 | - | 4.99 | 366,051 |
| EU Countries Quiz | 0 | - | 4.99 | 269,569 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,028 |
| Countries that Border China | 0 | - | 4.96 | 261,730 |
| French-Speaking Countries | 0 | - | 4.85 | 268,648 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,537 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,115 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,611 |
| Every Country Shape | 0 | - | 5.00 | 458,225 |
| Europe Capital to Country | 0 | - | 4.99 | 247,345 |
| Longest International Borders | 0 | - | 4.99 | 263,412 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,828 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,734 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,238 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,501 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,709 |
| Megacities on a World Map | 0 | - | 4.98 | 250,603 |
| World Currency Quiz | 0 | - | 4.92 | 297,951 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,203 |
| NATO Countries | 0 | - | 4.98 | 275,273 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,826 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,907 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 223,962 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,308 |
| Official Cities in the UK | 0 | - | 4.89 | 280,266 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,932 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,130 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,165 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,278 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,345 |
| Countries with Megacities | 0 | - | 4.99 | 246,321 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,656 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,763 |
| World Capitals by Map | 0 | - | 5.00 | 282,927 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,850 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,275 |
| World's Busiest Airports | 0 | - | 4.94 | 210,152 |
| Country Chain | 0 | - | 4.96 | 215,600 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,264 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,462 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,515 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,811 |
| Independence from Whom | 0 | - | 4.99 | 209,529 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,439 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,543 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,424 |
| Countries with Six Letters | 0 | - | 4.93 | 210,236 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,501 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,425 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,208 |
| Flags of Oceania | 0 | - | 5.00 | 254,775 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,321 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,172 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,904 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,273 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,805 |
| Countries in their Native Language | 0 | - | 4.99 | 196,506 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,195 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,120 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,321 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,206 |
| Monarchies of the World | 0 | - | 4.94 | 166,431 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,450 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,619 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,287 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,873 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,034 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,044 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,814 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,605 |
| Countries That End in Y | 0 | - | 4.90 | 185,166 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,129 |
| Olympic Host Countries | 0 | - | 4.98 | 198,788 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,557 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,860 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,028 |
| Every European Country Shape | 0 | - | 4.95 | 199,887 |
| Countries of the Middle East | 0 | - | 4.96 | 198,755 |
| Countries by Official Language | 0 | - | 4.95 | 192,630 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,140 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,982 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,655 |
| Counties of Ireland | 0 | - | 4.92 | 192,857 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,339 |
| Countries Bordering India | 0 | - | 4.98 | 162,553 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,597 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,463 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,571 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,564 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,382 |
| European Cities by Clue | 0 | - | 4.70 | 88,774 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,930 |
| Islands by Country #2 | 0 | - | 4.80 | 76,950 |
