| Island Countries | 0 | - | 4.99 | 711,885 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,300 |
| European Countries by Clue | 0 | - | 4.92 | 184,028 |
| Countries by Military Spending | 0 | - | 4.93 | 178,748 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,088 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,752,211 |
| US States Quiz | 0 | - | 5.00 | 16,962,189 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,713 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,828 |
| World Capitals Quiz | 0 | - | 5.00 | 5,096,519 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,677 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,946 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,490 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,305 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,488 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,712 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,957 |
| All Country Flags of the World | 0 | - | 5.00 | 3,699,541 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,912 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,943 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,870 |
| Countries of Africa | 0 | - | 5.00 | 2,552,943 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,087 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,352 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,095 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,724 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,224 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,772 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,633 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,872 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,189 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,089 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,381 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,785 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,635 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,191 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,770 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,337 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,791 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,915 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,068 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,786 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,041 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,971 |
| Random Country to Capital | 0 | - | 4.98 | 925,635 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,522 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,596 |
| Asia Map Quiz | 0 | - | 4.99 | 923,018 |
| Countries that Start with U | 0 | - | 4.97 | 907,417 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,696 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,924 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,566 |
| Counties of England | 0 | - | 4.97 | 801,263 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,176 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,879 |
| Top World Languages | 0 | - | 4.92 | 827,584 |
| Countries of South America | 0 | - | 5.00 | 930,291 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,177 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,281 |
| Countries that Start with K | 0 | - | 4.97 | 819,329 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,919 |
| US States with an Empty Map | 0 | - | 5.00 | 627,498 |
| Countries that Start with V | 0 | - | 4.98 | 611,217 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,125 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,809 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,244 |
| Countries that Start with D | 0 | - | 4.96 | 714,472 |
| Countries That Border Russia | 0 | - | 4.98 | 463,902 |
| One Border Countries | 0 | - | 4.98 | 471,095 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,974 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,953 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,691 |
| Countries with Four Letters | 0 | - | 4.99 | 424,932 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,944 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,594 |
| Countries Bordering France | 0 | - | 4.83 | 404,346 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,836 |
| Northernmost Countries | 0 | - | 4.99 | 363,223 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,713 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,185 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,329 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,259 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,661 |
| Landlocked Countries | 0 | - | 4.99 | 424,087 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,179 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,621 |
| Australia Map Quiz | 0 | - | 4.95 | 345,764 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,526 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,849 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,760 |
| Countries that Start with H | 0 | - | 4.96 | 608,176 |
| Countries that Start with J | 0 | - | 4.98 | 605,653 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,157 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,511 |
| "Land" Countries | 0 | - | 4.98 | 337,951 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,652 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,909 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,156 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,861 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,611 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,755 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,204 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,034 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,931 |
| Countries with Z | 0 | - | 4.98 | 292,034 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,194 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,663 |
| Flags of North and South America | 0 | - | 4.99 | 375,860 |
| EU Countries Quiz | 0 | - | 4.99 | 276,877 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,725 |
| Countries that Border China | 0 | - | 4.96 | 263,970 |
| French-Speaking Countries | 0 | - | 4.85 | 271,358 |
| Countries with Five Letters | 0 | - | 4.96 | 283,284 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,010 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,407 |
| Every Country Shape | 0 | - | 5.00 | 469,577 |
| Europe Capital to Country | 0 | - | 4.99 | 251,619 |
| Longest International Borders | 0 | - | 4.99 | 265,560 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,830 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,415 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,514 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,307 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,776 |
| Megacities on a World Map | 0 | - | 4.98 | 256,236 |
| World Currency Quiz | 0 | - | 4.92 | 305,700 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,897 |
| NATO Countries | 0 | - | 4.98 | 282,618 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,389 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,437 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,441 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,000 |
| Official Cities in the UK | 0 | - | 4.89 | 285,505 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,077 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,401 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,801 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,795 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,576 |
| Countries with Megacities | 0 | - | 4.99 | 266,030 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,261 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,994 |
| World Capitals by Map | 0 | - | 5.00 | 288,660 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,120 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,763 |
| World's Busiest Airports | 0 | - | 4.96 | 236,324 |
| Country Chain | 0 | - | 4.96 | 218,080 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,486 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,798 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,063 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,406 |
| Independence from Whom | 0 | - | 4.99 | 212,647 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,156 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,585 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,883 |
| Countries with Six Letters | 0 | - | 4.94 | 214,070 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,105 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,577 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,638 |
| Flags of Oceania | 0 | - | 5.00 | 261,829 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,343 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,052 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,072 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,879 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,834 |
| Countries in their Native Language | 0 | - | 4.99 | 199,467 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,058 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,265 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,730 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,229 |
| Monarchies of the World | 0 | - | 4.94 | 169,794 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,048 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,622 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,406 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,830 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,162 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,079 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,438 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,542 |
| Countries That End in Y | 0 | - | 4.91 | 186,011 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,260 |
| Olympic Host Countries | 0 | - | 4.98 | 201,585 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,088 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,060 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,456 |
| Every European Country Shape | 0 | - | 4.96 | 202,618 |
| Countries of the Middle East | 0 | - | 4.96 | 202,269 |
| Countries by Official Language | 0 | - | 4.95 | 195,691 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,350 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,947 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,938 |
| Counties of Ireland | 0 | - | 4.92 | 196,835 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,509 |
| Countries Bordering India | 0 | - | 4.98 | 163,717 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,922 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,071 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,397 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,840 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,362 |
| European Cities by Clue | 0 | - | 4.70 | 89,139 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,153 |
| Islands by Country #2 | 0 | - | 4.80 | 77,740 |
