| Island Countries | 0 | - | 4.99 | 711,770 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,249 |
| European Countries by Clue | 0 | - | 4.92 | 184,007 |
| Countries by Military Spending | 0 | - | 4.93 | 178,729 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,989 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,733,603 |
| US States Quiz | 0 | - | 5.00 | 16,957,579 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,643,081 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,247 |
| World Capitals Quiz | 0 | - | 5.00 | 5,094,868 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,568 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,070 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,547 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,542,969 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,013 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,198 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,566 |
| All Country Flags of the World | 0 | - | 5.00 | 3,697,189 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,307 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,373 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,271 |
| Countries of Africa | 0 | - | 5.00 | 2,552,005 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,954 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,695,875 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,882 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,283 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,093 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,368 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,270 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,323 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,409 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,688 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,068 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,394 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,286 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,122 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,470 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,065 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,464 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,738 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,773 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,168 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,728 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,868 |
| Random Country to Capital | 0 | - | 4.98 | 925,301 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,310 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,244 |
| Asia Map Quiz | 0 | - | 4.99 | 922,729 |
| Countries that Start with U | 0 | - | 4.97 | 907,207 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,285 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,551 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,415 |
| Counties of England | 0 | - | 4.97 | 800,991 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,984 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,662 |
| Top World Languages | 0 | - | 4.92 | 827,222 |
| Countries of South America | 0 | - | 5.00 | 929,992 |
| Africa Capitals Quiz | 0 | - | 4.99 | 741,945 |
| Asia Capitals Quiz | 0 | - | 4.98 | 696,855 |
| Countries that Start with K | 0 | - | 4.97 | 819,103 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,839 |
| US States with an Empty Map | 0 | - | 5.00 | 627,332 |
| Countries that Start with V | 0 | - | 4.98 | 611,078 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,987 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,763 |
| Flags of Asia Quiz | 0 | - | 4.99 | 617,950 |
| Countries that Start with D | 0 | - | 4.96 | 714,139 |
| Countries That Border Russia | 0 | - | 4.98 | 463,815 |
| One Border Countries | 0 | - | 4.98 | 470,957 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,906 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,809 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,565 |
| Countries with Four Letters | 0 | - | 4.99 | 424,780 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,842 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,452 |
| Countries Bordering France | 0 | - | 4.83 | 404,278 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,717 |
| Northernmost Countries | 0 | - | 4.99 | 363,084 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,655 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,104 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,267 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,187 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,631 |
| Landlocked Countries | 0 | - | 4.99 | 423,834 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,070 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,558 |
| Australia Map Quiz | 0 | - | 4.95 | 345,704 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,441 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,731 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,619 |
| Countries that Start with H | 0 | - | 4.96 | 607,940 |
| Countries that Start with J | 0 | - | 4.98 | 605,419 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,032 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,429 |
| "Land" Countries | 0 | - | 4.98 | 337,888 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,612 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,860 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,012 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,808 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,556 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,446 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,062 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,994 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,787 |
| Countries with Z | 0 | - | 4.98 | 291,971 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,099 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,613 |
| Flags of North and South America | 0 | - | 4.99 | 375,691 |
| EU Countries Quiz | 0 | - | 4.99 | 276,714 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,638 |
| Countries that Border China | 0 | - | 4.96 | 263,918 |
| French-Speaking Countries | 0 | - | 4.85 | 271,301 |
| Countries with Five Letters | 0 | - | 4.96 | 283,217 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,991 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,286 |
| Every Country Shape | 0 | - | 5.00 | 469,339 |
| Europe Capital to Country | 0 | - | 4.99 | 251,527 |
| Longest International Borders | 0 | - | 4.99 | 265,528 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,703 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,378 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,259 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,262 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,721 |
| Megacities on a World Map | 0 | - | 4.98 | 256,143 |
| World Currency Quiz | 0 | - | 4.92 | 305,530 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,665 |
| NATO Countries | 0 | - | 4.98 | 282,503 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,358 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,359 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,393 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,928 |
| Official Cities in the UK | 0 | - | 4.89 | 285,410 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,020 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,376 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,742 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,752 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,537 |
| Countries with Megacities | 0 | - | 4.99 | 265,881 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,202 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,930 |
| World Capitals by Map | 0 | - | 5.00 | 288,516 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,090 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,731 |
| World's Busiest Airports | 0 | - | 4.96 | 236,172 |
| Country Chain | 0 | - | 4.96 | 217,963 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,409 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,704 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,014 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,377 |
| Independence from Whom | 0 | - | 4.99 | 212,570 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,122 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,553 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,854 |
| Countries with Six Letters | 0 | - | 4.94 | 214,027 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,078 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,559 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,560 |
| Flags of Oceania | 0 | - | 5.00 | 261,682 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,281 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,015 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,042 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,853 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,730 |
| Countries in their Native Language | 0 | - | 4.99 | 199,424 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,010 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,208 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,710 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,191 |
| Monarchies of the World | 0 | - | 4.94 | 169,733 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,012 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,570 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,375 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,805 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,109 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,063 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,392 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,423 |
| Countries That End in Y | 0 | - | 4.91 | 186,000 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,196 |
| Olympic Host Countries | 0 | - | 4.98 | 201,549 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,967 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,008 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,424 |
| Every European Country Shape | 0 | - | 4.96 | 202,565 |
| Countries of the Middle East | 0 | - | 4.96 | 202,204 |
| Countries by Official Language | 0 | - | 4.95 | 195,644 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,310 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,923 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,924 |
| Counties of Ireland | 0 | - | 4.92 | 196,764 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,468 |
| Countries Bordering India | 0 | - | 4.98 | 163,701 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,890 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,062 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,375 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,826 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,343 |
| European Cities by Clue | 0 | - | 4.70 | 89,132 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,143 |
| Islands by Country #2 | 0 | - | 4.80 | 77,701 |
