| Island Countries | 0 | - | 4.99 | 710,713 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,612 |
| European Countries by Clue | 0 | - | 4.92 | 183,731 |
| Countries by Military Spending | 0 | - | 4.93 | 178,026 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,806 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,514,298 |
| US States Quiz | 0 | - | 5.00 | 16,893,032 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,627,471 |
| United States Map Quiz | 0 | - | 4.98 | 4,160,884 |
| World Capitals Quiz | 0 | - | 5.00 | 5,078,228 |
| Europe Map Quiz | 0 | - | 5.00 | 4,766,347 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,831,432 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,467 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,384 |
| Random Capital to Country | 0 | - | 4.99 | 2,592,726 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,772,425 |
| Africa Map Quiz | 0 | - | 5.00 | 2,119,600 |
| All Country Flags of the World | 0 | - | 5.00 | 3,671,206 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,103,132 |
| Countries that Start with B | 0 | - | 4.95 | 2,296,006 |
| Countries that Start with A | 0 | - | 4.98 | 2,164,358 |
| Countries of Africa | 0 | - | 5.00 | 2,540,407 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,840 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,690,983 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,553 |
| Countries that Start with C | 0 | - | 4.96 | 1,823,351 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,851 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,989 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,797 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,588,293 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,345 |
| Countries that Start with G | 0 | - | 4.97 | 1,504,456 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,603 |
| Countries that Start with E | 0 | - | 4.95 | 1,378,212 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,514 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,599 |
| Countries that Start with I | 0 | - | 4.92 | 1,289,122 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,973 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,744 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,494 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,560 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,907 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,549 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,591 |
| Random Country to Capital | 0 | - | 4.98 | 921,424 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,514 |
| Biggest Cities in the United States | 0 | - | 4.94 | 979,487 |
| Asia Map Quiz | 0 | - | 4.99 | 917,788 |
| Countries that Start with U | 0 | - | 4.97 | 905,045 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,294 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,352 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,844 |
| Counties of England | 0 | - | 4.97 | 797,760 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,897 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,009 |
| Top World Languages | 0 | - | 4.92 | 823,097 |
| Countries of South America | 0 | - | 5.00 | 926,054 |
| Africa Capitals Quiz | 0 | - | 4.99 | 738,544 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,783 |
| Countries that Start with K | 0 | - | 4.97 | 816,524 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,812 |
| US States with an Empty Map | 0 | - | 5.00 | 625,185 |
| Countries that Start with V | 0 | - | 4.98 | 609,706 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,070 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,228 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,389 |
| Countries that Start with D | 0 | - | 4.96 | 710,568 |
| Countries That Border Russia | 0 | - | 4.98 | 462,028 |
| One Border Countries | 0 | - | 4.98 | 469,174 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,089 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,889 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,689 |
| Countries with Four Letters | 0 | - | 4.99 | 422,871 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,750 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,157 |
| Countries Bordering France | 0 | - | 4.83 | 402,809 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,624 |
| Northernmost Countries | 0 | - | 4.99 | 361,569 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,694 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,277 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,645 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,249 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,840 |
| Landlocked Countries | 0 | - | 4.99 | 421,150 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,511 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,663 |
| Australia Map Quiz | 0 | - | 4.95 | 344,822 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,415 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,111 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,884 |
| Countries that Start with H | 0 | - | 4.96 | 605,416 |
| Countries that Start with J | 0 | - | 4.98 | 603,075 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,709 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,657 |
| "Land" Countries | 0 | - | 4.98 | 337,057 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,063 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 291,080 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,023 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,207 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,878 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,103 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,829 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,535 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,016 |
| Countries with Z | 0 | - | 4.98 | 291,179 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,146 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,988 |
| Flags of North and South America | 0 | - | 4.99 | 373,617 |
| EU Countries Quiz | 0 | - | 4.99 | 274,820 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,721 |
| Countries that Border China | 0 | - | 4.96 | 263,310 |
| French-Speaking Countries | 0 | - | 4.85 | 270,679 |
| Countries with Five Letters | 0 | - | 4.96 | 282,022 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,321 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,809 |
| Every Country Shape | 0 | - | 5.00 | 466,414 |
| Europe Capital to Country | 0 | - | 4.99 | 250,543 |
| Longest International Borders | 0 | - | 4.99 | 265,046 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,756 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,715 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,855 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,573 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,101 |
| Megacities on a World Map | 0 | - | 4.98 | 254,919 |
| World Currency Quiz | 0 | - | 4.92 | 303,548 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,920 |
| NATO Countries | 0 | - | 4.98 | 280,895 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,004 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,492 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,764 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,091 |
| Official Cities in the UK | 0 | - | 4.89 | 284,100 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,245 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,037 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,153 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,174 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,094 |
| Countries with Megacities | 0 | - | 4.99 | 263,972 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,539 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,063 |
| World Capitals by Map | 0 | - | 5.00 | 286,911 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,790 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,295 |
| World's Busiest Airports | 0 | - | 4.96 | 234,171 |
| Country Chain | 0 | - | 4.96 | 217,216 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,560 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,330 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,138 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,837 |
| Independence from Whom | 0 | - | 4.99 | 211,888 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,574 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,769 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,554 |
| Countries with Six Letters | 0 | - | 4.94 | 213,310 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,819 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,303 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,774 |
| Flags of Oceania | 0 | - | 5.00 | 259,822 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,551 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,535 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,732 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,447 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,245 |
| Countries in their Native Language | 0 | - | 4.99 | 198,694 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,170 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,525 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,379 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,769 |
| Monarchies of the World | 0 | - | 4.94 | 168,944 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,511 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,516 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,790 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,381 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,332 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,859 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,967 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,131 |
| Countries That End in Y | 0 | - | 4.91 | 185,814 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,569 |
| Olympic Host Countries | 0 | - | 4.98 | 200,917 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,978 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,582 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,059 |
| Every European Country Shape | 0 | - | 4.96 | 201,949 |
| Countries of the Middle East | 0 | - | 4.96 | 201,336 |
| Countries by Official Language | 0 | - | 4.95 | 195,074 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,027 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,535 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,645 |
| Counties of Ireland | 0 | - | 4.92 | 195,571 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,034 |
| Countries Bordering India | 0 | - | 4.98 | 163,462 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,662 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,915 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,006 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,613 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,877 |
| European Cities by Clue | 0 | - | 4.70 | 89,073 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,211 |
| Islands by Country #2 | 0 | - | 4.80 | 77,478 |
