| Island Countries | 0 | - | 4.99 | 712,186 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,443 |
| European Countries by Clue | 0 | - | 4.92 | 184,075 |
| Countries by Military Spending | 0 | - | 4.93 | 178,878 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,353 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,805,277 |
| US States Quiz | 0 | - | 5.00 | 16,976,381 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,436 |
| United States Map Quiz | 0 | - | 4.98 | 4,169,277 |
| World Capitals Quiz | 0 | - | 5.00 | 5,100,668 |
| Europe Map Quiz | 0 | - | 5.00 | 4,783,501 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,305 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,400 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,544,385 |
| Random Capital to Country | 0 | - | 4.99 | 2,599,739 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,145 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,113 |
| All Country Flags of the World | 0 | - | 5.00 | 3,705,640 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,111,589 |
| Countries that Start with B | 0 | - | 4.95 | 2,304,503 |
| Countries that Start with A | 0 | - | 4.98 | 2,173,535 |
| Countries of Africa | 0 | - | 5.00 | 2,555,680 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,541 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,697,415 |
| South America Map Quiz | 0 | - | 5.00 | 1,555,285 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,907 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,697 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,802 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,725 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,597,472 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,236 |
| Countries that Start with G | 0 | - | 4.97 | 1,510,158 |
| Countries that Start with M | 0 | - | 4.97 | 1,387,204 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,791 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,492 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,592 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,566 |
| Countries that Start with P | 0 | - | 4.94 | 1,221,095 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,615 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,441 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,840 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,255,475 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,804 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,299 |
| Random Country to Capital | 0 | - | 4.98 | 926,724 |
| Countries that Start with T | 0 | - | 4.90 | 1,014,124 |
| Biggest Cities in the United States | 0 | - | 4.94 | 985,682 |
| Asia Map Quiz | 0 | - | 4.99 | 924,015 |
| Countries that Start with U | 0 | - | 4.97 | 907,890 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,674 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,981 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,960 |
| Counties of England | 0 | - | 4.97 | 801,975 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,960 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,554 |
| Top World Languages | 0 | - | 4.92 | 828,573 |
| Countries of South America | 0 | - | 5.00 | 931,325 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,885 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,944 |
| Countries that Start with K | 0 | - | 4.97 | 819,976 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,162 |
| US States with an Empty Map | 0 | - | 5.00 | 627,996 |
| Countries that Start with V | 0 | - | 4.98 | 611,564 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,550 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,951 |
| Flags of Asia Quiz | 0 | - | 4.99 | 619,008 |
| Countries that Start with D | 0 | - | 4.96 | 715,324 |
| Countries That Border Russia | 0 | - | 4.98 | 464,198 |
| One Border Countries | 0 | - | 4.98 | 471,485 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,164 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,392 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,135 |
| Countries with Four Letters | 0 | - | 4.99 | 425,310 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,232 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,922 |
| Countries Bordering France | 0 | - | 4.83 | 404,606 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,122 |
| Northernmost Countries | 0 | - | 4.99 | 363,555 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,952 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,406 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,561 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,444 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,814 |
| Landlocked Countries | 0 | - | 4.99 | 424,796 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,492 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,827 |
| Australia Map Quiz | 0 | - | 4.95 | 345,949 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,741 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,192 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,158 |
| Countries that Start with H | 0 | - | 4.96 | 608,805 |
| Countries that Start with J | 0 | - | 4.98 | 606,213 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,462 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,706 |
| "Land" Countries | 0 | - | 4.98 | 338,151 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,811 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,042 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,617 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,016 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,801 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,497 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,425 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,142 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,355 |
| Countries with Z | 0 | - | 4.98 | 292,213 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,393 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,845 |
| Flags of North and South America | 0 | - | 4.99 | 376,324 |
| EU Countries Quiz | 0 | - | 4.99 | 277,310 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,941 |
| Countries that Border China | 0 | - | 4.96 | 264,114 |
| French-Speaking Countries | 0 | - | 4.85 | 271,496 |
| Countries with Five Letters | 0 | - | 4.96 | 283,491 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,100 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,894 |
| Every Country Shape | 0 | - | 5.00 | 470,230 |
| Europe Capital to Country | 0 | - | 4.99 | 251,828 |
| Longest International Borders | 0 | - | 4.99 | 265,688 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,390 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,525 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,667 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,433 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,938 |
| Megacities on a World Map | 0 | - | 4.98 | 256,570 |
| World Currency Quiz | 0 | - | 4.92 | 306,212 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,055 |
| NATO Countries | 0 | - | 4.98 | 282,988 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,466 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,651 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,574 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,169 |
| Official Cities in the UK | 0 | - | 4.89 | 285,872 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,253 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,484 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,944 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,953 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,676 |
| Countries with Megacities | 0 | - | 4.99 | 266,595 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,413 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,167 |
| World Capitals by Map | 0 | - | 5.00 | 288,998 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 192,190 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,867 |
| World's Busiest Airports | 0 | - | 4.96 | 236,771 |
| Country Chain | 0 | - | 4.96 | 218,279 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,705 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,209 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,193 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,526 |
| Independence from Whom | 0 | - | 4.99 | 212,848 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,287 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,734 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,952 |
| Countries with Six Letters | 0 | - | 4.94 | 214,225 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,179 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,635 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,836 |
| Flags of Oceania | 0 | - | 5.00 | 262,188 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,531 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,180 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,143 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,988 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,472 |
| Countries in their Native Language | 0 | - | 4.99 | 199,607 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,202 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,429 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,823 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,342 |
| Monarchies of the World | 0 | - | 4.94 | 169,993 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,149 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,766 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,508 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,894 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,372 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,131 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,553 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,807 |
| Countries That End in Y | 0 | - | 4.91 | 186,042 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,494 |
| Olympic Host Countries | 0 | - | 4.98 | 201,761 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,319 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,144 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,542 |
| Every European Country Shape | 0 | - | 4.96 | 202,761 |
| Countries of the Middle East | 0 | - | 4.96 | 202,410 |
| Countries by Official Language | 0 | - | 4.95 | 195,827 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,719 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,045 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,022 |
| Counties of Ireland | 0 | - | 4.92 | 197,043 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,612 |
| Countries Bordering India | 0 | - | 4.98 | 163,763 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,989 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,113 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,480 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,908 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,400 |
| European Cities by Clue | 0 | - | 4.70 | 89,158 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,383 |
| Islands by Country #2 | 0 | - | 4.80 | 77,805 |
