| Island Countries | 0 | - | 4.99 | 707,269 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,034 |
| European Countries by Clue | 0 | - | 4.92 | 182,295 |
| Countries by Military Spending | 0 | - | 4.93 | 176,263 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,156 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,857,135 |
| US States Quiz | 0 | - | 5.00 | 16,680,456 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,583,913 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,762 |
| World Capitals Quiz | 0 | - | 5.00 | 5,026,087 |
| Europe Map Quiz | 0 | - | 5.00 | 4,727,619 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,797,736 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,232 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,524,739 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,353 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,403 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,874 |
| All Country Flags of the World | 0 | - | 5.00 | 3,594,810 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,424 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,137 |
| Countries that Start with A | 0 | - | 4.98 | 2,144,800 |
| Countries of Africa | 0 | - | 5.00 | 2,504,601 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,437,895 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,153 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,338 |
| Countries that Start with C | 0 | - | 4.96 | 1,808,894 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,374,859 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,304 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,618 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,133 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,413 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,558 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,355 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,385 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,649 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,510 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,286 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,723 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,450 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,673 |
| Countries that Start with N | 0 | - | 4.93 | 1,108,871 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,278 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,010 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,522 |
| Random Country to Capital | 0 | - | 4.98 | 910,572 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,503 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,158 |
| Asia Map Quiz | 0 | - | 4.99 | 905,883 |
| Countries that Start with U | 0 | - | 4.97 | 899,232 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,764 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,505 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,149 |
| Counties of England | 0 | - | 4.97 | 788,395 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,349 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,492 |
| Top World Languages | 0 | - | 4.92 | 812,059 |
| Countries of South America | 0 | - | 5.00 | 913,531 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,431 |
| Asia Capitals Quiz | 0 | - | 4.98 | 684,888 |
| Countries that Start with K | 0 | - | 4.96 | 808,676 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,920 |
| US States with an Empty Map | 0 | - | 5.00 | 618,151 |
| Countries that Start with V | 0 | - | 4.98 | 604,571 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,245 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,019 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,564 |
| Countries that Start with D | 0 | - | 4.96 | 700,587 |
| Countries That Border Russia | 0 | - | 4.98 | 458,557 |
| One Border Countries | 0 | - | 4.98 | 463,634 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,320 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,845 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,026 |
| Countries with Four Letters | 0 | - | 4.99 | 418,080 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,180 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,475 |
| Countries Bordering France | 0 | - | 4.85 | 396,702 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,143 |
| Northernmost Countries | 0 | - | 4.99 | 357,286 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,077 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,853 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,713 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,066 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,955 |
| Landlocked Countries | 0 | - | 4.99 | 412,933 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,875 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,061 |
| Australia Map Quiz | 0 | - | 4.94 | 342,242 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,497 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,244 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,031 |
| Countries that Start with H | 0 | - | 4.96 | 597,133 |
| Countries that Start with J | 0 | - | 4.98 | 595,202 |
| World Capitals by Proximity | 0 | - | 4.91 | 327,981 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,490 |
| "Land" Countries | 0 | - | 4.98 | 333,441 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,260 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,582 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,340 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 293,917 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,158 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,292 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,576 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,089 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,750 |
| Countries with Z | 0 | - | 4.98 | 287,492 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,897 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,713 |
| Flags of North and South America | 0 | - | 4.99 | 365,639 |
| EU Countries Quiz | 0 | - | 4.99 | 269,467 |
| Biggest Cities in Germany | 0 | - | 4.95 | 290,986 |
| Countries that Border China | 0 | - | 4.96 | 261,689 |
| French-Speaking Countries | 0 | - | 4.85 | 268,621 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,502 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,076 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,528 |
| Every Country Shape | 0 | - | 5.00 | 458,048 |
| Europe Capital to Country | 0 | - | 4.99 | 247,299 |
| Longest International Borders | 0 | - | 4.99 | 263,385 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,712 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,695 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,107 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,455 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,675 |
| Megacities on a World Map | 0 | - | 4.98 | 250,359 |
| World Currency Quiz | 0 | - | 4.92 | 297,841 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,169 |
| NATO Countries | 0 | - | 4.98 | 275,163 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,811 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,845 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 223,874 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,275 |
| Official Cities in the UK | 0 | - | 4.89 | 280,178 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,890 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,106 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,137 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,247 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,314 |
| Countries with Megacities | 0 | - | 4.99 | 246,236 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,612 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,725 |
| World Capitals by Map | 0 | - | 5.00 | 282,842 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,829 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,258 |
| World's Busiest Airports | 0 | - | 4.94 | 210,075 |
| Country Chain | 0 | - | 4.96 | 215,575 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,227 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,424 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,486 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,782 |
| Independence from Whom | 0 | - | 4.99 | 209,491 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,289 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,525 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,397 |
| Countries with Six Letters | 0 | - | 4.93 | 210,205 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,472 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,413 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,168 |
| Flags of Oceania | 0 | - | 5.00 | 254,645 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,287 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,147 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,890 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,243 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,706 |
| Countries in their Native Language | 0 | - | 4.99 | 196,484 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,177 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,072 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,308 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,186 |
| Monarchies of the World | 0 | - | 4.94 | 166,395 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,436 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,577 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,256 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,775 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,992 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,031 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,795 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,531 |
| Countries That End in Y | 0 | - | 4.90 | 185,156 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,100 |
| Olympic Host Countries | 0 | - | 4.98 | 198,770 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,525 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,844 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,002 |
| Every European Country Shape | 0 | - | 4.95 | 199,848 |
| Countries of the Middle East | 0 | - | 4.96 | 198,711 |
| Countries by Official Language | 0 | - | 4.95 | 192,601 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,123 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,955 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,644 |
| Counties of Ireland | 0 | - | 4.92 | 192,810 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,316 |
| Countries Bordering India | 0 | - | 4.98 | 162,540 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,588 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,453 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,553 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,553 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,375 |
| European Cities by Clue | 0 | - | 4.70 | 88,769 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,923 |
| Islands by Country #2 | 0 | - | 4.80 | 76,941 |
