| Island Countries | 0 | - | 4.99 | 711,981 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,348 |
| European Countries by Clue | 0 | - | 4.92 | 184,043 |
| Countries by Military Spending | 0 | - | 4.93 | 178,784 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,183 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,767,483 |
| US States Quiz | 0 | - | 5.00 | 16,966,206 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,645,881 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,234 |
| World Capitals Quiz | 0 | - | 5.00 | 5,097,924 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,535 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,843,637 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,237 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,637 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,886 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,795,050 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,330 |
| All Country Flags of the World | 0 | - | 5.00 | 3,701,344 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,110,375 |
| Countries that Start with B | 0 | - | 4.95 | 2,303,423 |
| Countries that Start with A | 0 | - | 4.98 | 2,172,412 |
| Countries of Africa | 0 | - | 5.00 | 2,553,748 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,259 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,648 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,318 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,084 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,369 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,099 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,953 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,372 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,856 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,431 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,636 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,093 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,972 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,282 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,024 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,564 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,027 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,086 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,291 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,282 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,270 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,074 |
| Random Country to Capital | 0 | - | 4.98 | 925,925 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,700 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,925 |
| Asia Map Quiz | 0 | - | 4.99 | 923,310 |
| Countries that Start with U | 0 | - | 4.97 | 907,555 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,015 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,214 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,687 |
| Counties of England | 0 | - | 4.97 | 801,466 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,315 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,126 |
| Top World Languages | 0 | - | 4.92 | 827,882 |
| Countries of South America | 0 | - | 5.00 | 930,608 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,373 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,517 |
| Countries that Start with K | 0 | - | 4.97 | 819,522 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,989 |
| US States with an Empty Map | 0 | - | 5.00 | 627,632 |
| Countries that Start with V | 0 | - | 4.98 | 611,331 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,231 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,852 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,478 |
| Countries that Start with D | 0 | - | 4.96 | 714,711 |
| Countries That Border Russia | 0 | - | 4.98 | 464,005 |
| One Border Countries | 0 | - | 4.98 | 471,233 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,037 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,129 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,821 |
| Countries with Four Letters | 0 | - | 4.99 | 425,050 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,018 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,691 |
| Countries Bordering France | 0 | - | 4.83 | 404,433 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,943 |
| Northernmost Countries | 0 | - | 4.99 | 363,323 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,790 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,246 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,405 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,316 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,715 |
| Landlocked Countries | 0 | - | 4.99 | 424,288 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,299 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,691 |
| Australia Map Quiz | 0 | - | 4.95 | 345,838 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,579 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,962 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,900 |
| Countries that Start with H | 0 | - | 4.96 | 608,366 |
| Countries that Start with J | 0 | - | 4.98 | 605,827 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,239 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,583 |
| "Land" Countries | 0 | - | 4.98 | 338,009 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,687 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,945 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,316 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,914 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,672 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,007 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,284 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,067 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,073 |
| Countries with Z | 0 | - | 4.98 | 292,096 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,265 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,718 |
| Flags of North and South America | 0 | - | 4.99 | 375,985 |
| EU Countries Quiz | 0 | - | 4.99 | 277,019 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,810 |
| Countries that Border China | 0 | - | 4.96 | 264,012 |
| French-Speaking Countries | 0 | - | 4.85 | 271,402 |
| Countries with Five Letters | 0 | - | 4.96 | 283,355 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,045 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,542 |
| Every Country Shape | 0 | - | 5.00 | 469,811 |
| Europe Capital to Country | 0 | - | 4.99 | 251,689 |
| Longest International Borders | 0 | - | 4.99 | 265,601 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,985 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,454 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,878 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,340 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,820 |
| Megacities on a World Map | 0 | - | 4.98 | 256,377 |
| World Currency Quiz | 0 | - | 4.92 | 305,856 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,948 |
| NATO Countries | 0 | - | 4.98 | 282,727 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,415 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,513 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,479 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,046 |
| Official Cities in the UK | 0 | - | 4.89 | 285,613 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,129 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,431 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,841 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,834 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,608 |
| Countries with Megacities | 0 | - | 4.99 | 266,256 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,295 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,059 |
| World Capitals by Map | 0 | - | 5.00 | 288,772 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,146 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,795 |
| World's Busiest Airports | 0 | - | 4.96 | 236,477 |
| Country Chain | 0 | - | 4.96 | 218,155 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,546 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,971 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,111 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,433 |
| Independence from Whom | 0 | - | 4.99 | 212,705 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,193 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,643 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,907 |
| Countries with Six Letters | 0 | - | 4.94 | 214,117 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,123 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,600 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,707 |
| Flags of Oceania | 0 | - | 5.00 | 261,959 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,397 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,078 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,097 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,904 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,923 |
| Countries in their Native Language | 0 | - | 4.99 | 199,520 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,111 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,325 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,749 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,264 |
| Monarchies of the World | 0 | - | 4.94 | 169,867 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,073 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,655 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,430 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,848 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,221 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,095 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,481 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,617 |
| Countries That End in Y | 0 | - | 4.91 | 186,018 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,341 |
| Olympic Host Countries | 0 | - | 4.98 | 201,647 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,176 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,092 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,483 |
| Every European Country Shape | 0 | - | 4.96 | 202,652 |
| Countries of the Middle East | 0 | - | 4.96 | 202,321 |
| Countries by Official Language | 0 | - | 4.95 | 195,747 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,417 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,976 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,955 |
| Counties of Ireland | 0 | - | 4.92 | 196,886 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,554 |
| Countries Bordering India | 0 | - | 4.98 | 163,732 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,943 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,084 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,418 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,867 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,371 |
| European Cities by Clue | 0 | - | 4.70 | 89,143 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,191 |
| Islands by Country #2 | 0 | - | 4.80 | 77,764 |
