| Island Countries | 0 | - | 4.99 | 712,714 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,703 |
| European Countries by Clue | 0 | - | 4.92 | 184,198 |
| Countries by Military Spending | 0 | - | 4.93 | 179,052 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,840 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,911,020 |
| US States Quiz | 0 | - | 5.00 | 17,004,137 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,655,276 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,084 |
| World Capitals Quiz | 0 | - | 5.00 | 5,108,783 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,704 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,850,320 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,934 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,546,566 |
| Random Capital to Country | 0 | - | 4.99 | 2,602,403 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,094 |
| Africa Map Quiz | 0 | - | 5.00 | 2,129,359 |
| All Country Flags of the World | 0 | - | 5.00 | 3,717,369 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,126,132 |
| Countries that Start with B | 0 | - | 4.95 | 2,307,279 |
| Countries that Start with A | 0 | - | 4.98 | 2,176,587 |
| Countries of Africa | 0 | - | 5.00 | 2,561,540 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,780 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,699,376 |
| South America Map Quiz | 0 | - | 5.00 | 1,557,104 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,106 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,512 |
| Countries that Start with S | 0 | - | 4.98 | 1,763,702 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,792 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,459 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,621 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,079 |
| Countries that Start with M | 0 | - | 4.97 | 1,388,698 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,604 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,234 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,127 |
| Countries that Start with I | 0 | - | 4.92 | 1,294,976 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,439 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,230 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,528 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,294 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,144 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,224 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,899 |
| Random Country to Capital | 0 | - | 4.98 | 928,878 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,224 |
| Biggest Cities in the United States | 0 | - | 4.94 | 987,702 |
| Asia Map Quiz | 0 | - | 4.99 | 925,655 |
| Countries that Start with U | 0 | - | 4.97 | 908,732 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,240 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,132 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,663 |
| Counties of England | 0 | - | 4.97 | 803,339 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,810 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,716 |
| Top World Languages | 0 | - | 4.92 | 830,345 |
| Countries of South America | 0 | - | 5.00 | 933,247 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,224 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,191 |
| Countries that Start with K | 0 | - | 4.97 | 821,085 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,561 |
| US States with an Empty Map | 0 | - | 5.00 | 628,995 |
| Countries that Start with V | 0 | - | 4.98 | 612,194 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,387 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,211 |
| Flags of Asia Quiz | 0 | - | 4.99 | 620,863 |
| Countries that Start with D | 0 | - | 4.96 | 716,868 |
| Countries That Border Russia | 0 | - | 4.98 | 464,619 |
| One Border Countries | 0 | - | 4.98 | 472,161 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,630 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,168 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,933 |
| Countries with Four Letters | 0 | - | 4.99 | 426,029 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,747 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,752 |
| Countries Bordering France | 0 | - | 4.83 | 405,038 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,659 |
| Northernmost Countries | 0 | - | 4.99 | 364,220 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,338 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,815 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,969 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,738 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,122 |
| Landlocked Countries | 0 | - | 4.99 | 426,377 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,061 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,231 |
| Australia Map Quiz | 0 | - | 4.95 | 346,259 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,196 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,823 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,938 |
| Countries that Start with H | 0 | - | 4.96 | 609,896 |
| Countries that Start with J | 0 | - | 4.98 | 607,272 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,059 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,048 |
| "Land" Countries | 0 | - | 4.98 | 338,506 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,051 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,300 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,484 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,520 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,136 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,108 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,898 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,451 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,081 |
| Countries with Z | 0 | - | 4.98 | 292,568 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,743 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,321 |
| Flags of North and South America | 0 | - | 4.99 | 377,342 |
| EU Countries Quiz | 0 | - | 4.99 | 278,155 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,357 |
| Countries that Border China | 0 | - | 4.96 | 264,368 |
| French-Speaking Countries | 0 | - | 4.85 | 271,745 |
| Countries with Five Letters | 0 | - | 4.96 | 284,132 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,221 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,568 |
| Every Country Shape | 0 | - | 5.00 | 471,557 |
| Europe Capital to Country | 0 | - | 4.99 | 252,238 |
| Longest International Borders | 0 | - | 4.99 | 265,877 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,218 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,731 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,833 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,700 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,190 |
| Megacities on a World Map | 0 | - | 4.98 | 257,119 |
| World Currency Quiz | 0 | - | 4.92 | 307,027 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,350 |
| NATO Countries | 0 | - | 4.98 | 283,621 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,623 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,073 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,897 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,444 |
| Official Cities in the UK | 0 | - | 4.89 | 286,477 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,576 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,620 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,195 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,230 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,883 |
| Countries with Megacities | 0 | - | 4.99 | 267,373 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,713 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,681 |
| World Capitals by Map | 0 | - | 5.00 | 289,600 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,358 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,038 |
| World's Busiest Airports | 0 | - | 4.96 | 237,534 |
| Country Chain | 0 | - | 4.96 | 218,523 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,013 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,880 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,855 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,742 |
| Independence from Whom | 0 | - | 4.99 | 213,187 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,508 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,922 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,066 |
| Countries with Six Letters | 0 | - | 4.94 | 214,600 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,288 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,745 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,205 |
| Flags of Oceania | 0 | - | 5.00 | 262,955 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,868 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,420 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,235 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,531 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,182 |
| Countries in their Native Language | 0 | - | 4.99 | 199,818 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,456 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,759 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,966 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,518 |
| Monarchies of the World | 0 | - | 4.94 | 170,329 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,367 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,039 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,696 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,035 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,703 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,263 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,055 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,353 |
| Countries That End in Y | 0 | - | 4.91 | 186,106 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,807 |
| Olympic Host Countries | 0 | - | 4.98 | 202,046 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,696 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,279 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,716 |
| Every European Country Shape | 0 | - | 4.96 | 203,091 |
| Countries of the Middle East | 0 | - | 4.96 | 203,039 |
| Countries by Official Language | 0 | - | 4.95 | 196,085 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,858 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,196 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,152 |
| Counties of Ireland | 0 | - | 4.92 | 197,408 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,801 |
| Countries Bordering India | 0 | - | 4.98 | 163,836 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,339 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,168 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,333 |
| Countries with the Most Forest | 0 | - | 4.87 | 148,131 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,739 |
| European Cities by Clue | 0 | - | 4.70 | 89,183 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,424 |
| Islands by Country #2 | 0 | - | 4.80 | 77,910 |
