| Island Countries | 0 | - | 4.99 | 707,485 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,136 |
| European Countries by Clue | 0 | - | 4.92 | 182,340 |
| Countries by Military Spending | 0 | - | 4.93 | 176,351 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,363 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,893,171 |
| US States Quiz | 0 | - | 5.00 | 16,692,669 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,233 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,079 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,365 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,855 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,799,760 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,446 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,809 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,426 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,852 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,724 |
| All Country Flags of the World | 0 | - | 5.00 | 3,599,175 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,370 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,160 |
| Countries that Start with A | 0 | - | 4.97 | 2,145,996 |
| Countries of Africa | 0 | - | 5.00 | 2,506,487 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,365 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,111 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,864 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,747 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,578 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,047 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,483 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,293 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,122 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,283 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,923 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,065 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,404 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,690 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,900 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,224 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,054 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,138 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,392 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,760 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,527 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,987 |
| Random Country to Capital | 0 | - | 4.98 | 911,257 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,952 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,119 |
| Asia Map Quiz | 0 | - | 4.99 | 906,635 |
| Countries that Start with U | 0 | - | 4.97 | 899,726 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,725 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,223 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,479 |
| Counties of England | 0 | - | 4.97 | 788,883 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,766 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,017 |
| Top World Languages | 0 | - | 4.92 | 812,710 |
| Countries of South America | 0 | - | 5.00 | 914,158 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,918 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,523 |
| Countries that Start with K | 0 | - | 4.96 | 809,114 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,056 |
| US States with an Empty Map | 0 | - | 5.00 | 618,550 |
| Countries that Start with V | 0 | - | 4.98 | 604,896 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,614 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,115 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,173 |
| Countries that Start with D | 0 | - | 4.96 | 701,154 |
| Countries That Border Russia | 0 | - | 4.98 | 458,791 |
| One Border Countries | 0 | - | 4.98 | 464,127 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,685 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,071 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,601 |
| Countries with Four Letters | 0 | - | 4.99 | 418,366 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,398 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,653 |
| Countries Bordering France | 0 | - | 4.85 | 398,527 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,473 |
| Northernmost Countries | 0 | - | 4.99 | 357,547 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,221 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,011 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,925 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,195 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,025 |
| Landlocked Countries | 0 | - | 4.99 | 413,299 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,061 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,259 |
| Australia Map Quiz | 0 | - | 4.94 | 342,380 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,686 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,479 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,335 |
| Countries that Start with H | 0 | - | 4.96 | 597,619 |
| Countries that Start with J | 0 | - | 4.98 | 595,682 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,235 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,735 |
| "Land" Countries | 0 | - | 4.98 | 333,556 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,328 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,658 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,692 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,218 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,409 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,930 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,710 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,160 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,973 |
| Countries with Z | 0 | - | 4.98 | 287,789 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,038 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,827 |
| Flags of North and South America | 0 | - | 4.99 | 366,699 |
| EU Countries Quiz | 0 | - | 4.99 | 269,737 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,150 |
| Countries that Border China | 0 | - | 4.96 | 261,778 |
| French-Speaking Countries | 0 | - | 4.85 | 268,723 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,603 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,181 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,782 |
| Every Country Shape | 0 | - | 5.00 | 458,569 |
| Europe Capital to Country | 0 | - | 4.99 | 247,444 |
| Longest International Borders | 0 | - | 4.99 | 263,490 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,074 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,801 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,476 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,573 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,776 |
| Megacities on a World Map | 0 | - | 4.98 | 250,822 |
| World Currency Quiz | 0 | - | 4.92 | 298,220 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,271 |
| NATO Countries | 0 | - | 4.98 | 275,521 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,862 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,031 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,138 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,377 |
| Official Cities in the UK | 0 | - | 4.89 | 280,407 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,040 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,179 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,228 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,353 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,402 |
| Countries with Megacities | 0 | - | 4.99 | 246,520 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,718 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,845 |
| World Capitals by Map | 0 | - | 5.00 | 283,076 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,898 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,331 |
| World's Busiest Airports | 0 | - | 4.94 | 210,287 |
| Country Chain | 0 | - | 4.96 | 215,655 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,323 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,631 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,570 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,867 |
| Independence from Whom | 0 | - | 4.99 | 209,600 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,700 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,596 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,529 |
| Countries with Six Letters | 0 | - | 4.93 | 210,281 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,554 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,451 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,317 |
| Flags of Oceania | 0 | - | 5.00 | 254,977 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,394 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,828 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,936 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,316 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,990 |
| Countries in their Native Language | 0 | - | 4.99 | 196,560 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,255 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,242 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,352 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,306 |
| Monarchies of the World | 0 | - | 4.94 | 166,525 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,497 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,686 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,349 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,965 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,119 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,061 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,861 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,753 |
| Countries That End in Y | 0 | - | 4.90 | 185,183 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,186 |
| Olympic Host Countries | 0 | - | 4.98 | 198,833 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,646 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,882 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,071 |
| Every European Country Shape | 0 | - | 4.96 | 200,070 |
| Countries of the Middle East | 0 | - | 4.96 | 198,828 |
| Countries by Official Language | 0 | - | 4.95 | 192,706 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,169 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,037 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,691 |
| Counties of Ireland | 0 | - | 4.92 | 192,971 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,394 |
| Countries Bordering India | 0 | - | 4.98 | 162,571 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,626 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,607 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,605 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,407 |
| European Cities by Clue | 0 | - | 4.70 | 88,792 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,940 |
| Islands by Country #2 | 0 | - | 4.80 | 76,970 |
