| Island Countries | 0 | - | 4.99 | 707,370 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,079 |
| European Countries by Clue | 0 | - | 4.92 | 182,316 |
| Countries by Military Spending | 0 | - | 4.93 | 176,306 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,249 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,873,491 |
| US States Quiz | 0 | - | 5.00 | 16,685,857 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,952 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,286 |
| World Capitals Quiz | 0 | - | 5.00 | 5,027,679 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,627 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,641 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,740 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,176 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,901 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,805 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,202 |
| All Country Flags of the World | 0 | - | 5.00 | 3,596,725 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,844 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,596 |
| Countries that Start with A | 0 | - | 4.97 | 2,145,372 |
| Countries of Africa | 0 | - | 5.00 | 2,505,590 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,551 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,587 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,601 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,271 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,311 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,633 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,998 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,729 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,209 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,908 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,609 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,683 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,876 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,575 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,565 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,937 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,721 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,878 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,104 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,931 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,248 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,745 |
| Random Country to Capital | 0 | - | 4.98 | 910,869 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,692 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,609 |
| Asia Map Quiz | 0 | - | 4.99 | 906,233 |
| Countries that Start with U | 0 | - | 4.97 | 899,545 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,190 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,824 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,286 |
| Counties of England | 0 | - | 4.97 | 788,601 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,557 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,746 |
| Top World Languages | 0 | - | 4.92 | 812,342 |
| Countries of South America | 0 | - | 5.00 | 913,826 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,663 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,123 |
| Countries that Start with K | 0 | - | 4.96 | 808,868 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,985 |
| US States with an Empty Map | 0 | - | 5.00 | 618,348 |
| Countries that Start with V | 0 | - | 4.98 | 604,727 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,397 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,068 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,854 |
| Countries that Start with D | 0 | - | 4.96 | 700,825 |
| Countries That Border Russia | 0 | - | 4.98 | 458,661 |
| One Border Countries | 0 | - | 4.98 | 463,811 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,514 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,955 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,211 |
| Countries with Four Letters | 0 | - | 4.99 | 418,220 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,272 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,552 |
| Countries Bordering France | 0 | - | 4.85 | 397,723 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,366 |
| Northernmost Countries | 0 | - | 4.99 | 357,404 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,144 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,923 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,813 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,139 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,997 |
| Landlocked Countries | 0 | - | 4.99 | 413,108 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,950 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,154 |
| Australia Map Quiz | 0 | - | 4.94 | 342,308 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,583 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,382 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,153 |
| Countries that Start with H | 0 | - | 4.96 | 597,352 |
| Countries that Start with J | 0 | - | 4.98 | 595,415 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,101 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,614 |
| "Land" Countries | 0 | - | 4.98 | 333,489 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,289 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,619 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,496 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,070 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,226 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,602 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,639 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,117 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,855 |
| Countries with Z | 0 | - | 4.98 | 287,719 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,958 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,764 |
| Flags of North and South America | 0 | - | 4.99 | 366,186 |
| EU Countries Quiz | 0 | - | 4.99 | 269,603 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,045 |
| Countries that Border China | 0 | - | 4.96 | 261,736 |
| French-Speaking Countries | 0 | - | 4.85 | 268,662 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,543 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,122 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,642 |
| Every Country Shape | 0 | - | 5.00 | 458,292 |
| Europe Capital to Country | 0 | - | 4.99 | 247,368 |
| Longest International Borders | 0 | - | 4.99 | 263,422 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,877 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,747 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,290 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,514 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,719 |
| Megacities on a World Map | 0 | - | 4.98 | 250,656 |
| World Currency Quiz | 0 | - | 4.92 | 298,014 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,214 |
| NATO Countries | 0 | - | 4.98 | 275,323 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,831 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,928 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,008 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,316 |
| Official Cities in the UK | 0 | - | 4.89 | 280,284 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,952 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,138 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,177 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,299 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,354 |
| Countries with Megacities | 0 | - | 4.99 | 246,357 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,672 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,783 |
| World Capitals by Map | 0 | - | 5.00 | 282,963 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,864 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,292 |
| World's Busiest Airports | 0 | - | 4.94 | 210,186 |
| Country Chain | 0 | - | 4.96 | 215,613 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,283 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,497 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,528 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,828 |
| Independence from Whom | 0 | - | 4.99 | 209,543 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,489 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,549 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,441 |
| Countries with Six Letters | 0 | - | 4.93 | 210,242 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,518 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,432 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,228 |
| Flags of Oceania | 0 | - | 5.00 | 254,809 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,336 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,257 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,911 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,279 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,853 |
| Countries in their Native Language | 0 | - | 4.99 | 196,520 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,202 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,150 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,330 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,225 |
| Monarchies of the World | 0 | - | 4.94 | 166,455 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,459 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,637 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,300 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,897 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,050 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,045 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,819 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,635 |
| Countries That End in Y | 0 | - | 4.90 | 185,170 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,139 |
| Olympic Host Countries | 0 | - | 4.98 | 198,797 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,573 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,866 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,034 |
| Every European Country Shape | 0 | - | 4.96 | 199,937 |
| Countries of the Middle East | 0 | - | 4.96 | 198,767 |
| Countries by Official Language | 0 | - | 4.95 | 192,644 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,148 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,997 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,665 |
| Counties of Ireland | 0 | - | 4.92 | 192,878 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,350 |
| Countries Bordering India | 0 | - | 4.98 | 162,556 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,603 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,467 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,577 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,572 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,385 |
| European Cities by Clue | 0 | - | 4.70 | 88,779 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,931 |
| Islands by Country #2 | 0 | - | 4.80 | 76,953 |
