| Island Countries | 0 | - | 4.99 | 711,160 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,931 |
| European Countries by Clue | 0 | - | 4.92 | 183,847 |
| Countries by Military Spending | 0 | - | 4.93 | 178,415 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,300 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,608,714 |
| US States Quiz | 0 | - | 5.00 | 16,921,879 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,082 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,877 |
| World Capitals Quiz | 0 | - | 5.00 | 5,085,191 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,116 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,835,982 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,464 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,540,335 |
| Random Capital to Country | 0 | - | 4.99 | 2,595,076 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,051 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,126 |
| All Country Flags of the World | 0 | - | 5.00 | 3,681,933 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,956 |
| Countries that Start with B | 0 | - | 4.95 | 2,298,498 |
| Countries that Start with A | 0 | - | 4.98 | 2,167,137 |
| Countries of Africa | 0 | - | 5.00 | 2,545,784 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,818 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,693,188 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,961 |
| Countries that Start with C | 0 | - | 4.96 | 1,825,335 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,997 |
| Countries that Start with S | 0 | - | 4.98 | 1,757,827 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,702 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,591,320 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,361 |
| Countries that Start with G | 0 | - | 4.97 | 1,506,191 |
| Countries that Start with M | 0 | - | 4.97 | 1,384,031 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,940 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,996 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,011 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,461 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,251 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,282 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,439 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,891 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,249,023 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,815 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,153 |
| Random Country to Capital | 0 | - | 4.98 | 923,073 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,444 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,428 |
| Asia Map Quiz | 0 | - | 4.99 | 919,935 |
| Countries that Start with U | 0 | - | 4.97 | 905,775 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,573 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,142 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,501 |
| Counties of England | 0 | - | 4.97 | 799,102 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,830 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,005 |
| Top World Languages | 0 | - | 4.92 | 824,758 |
| Countries of South America | 0 | - | 5.00 | 927,800 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,983 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,938 |
| Countries that Start with K | 0 | - | 4.97 | 817,556 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,243 |
| US States with an Empty Map | 0 | - | 5.00 | 626,116 |
| Countries that Start with V | 0 | - | 4.98 | 610,233 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,956 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,429 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,074 |
| Countries that Start with D | 0 | - | 4.96 | 711,987 |
| Countries That Border Russia | 0 | - | 4.98 | 462,887 |
| One Border Countries | 0 | - | 4.98 | 470,038 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,438 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,707 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,548 |
| Countries with Four Letters | 0 | - | 4.99 | 423,446 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,204 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,637 |
| Countries Bordering France | 0 | - | 4.83 | 403,618 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,089 |
| Northernmost Countries | 0 | - | 4.99 | 362,110 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,108 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,603 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,749 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,847 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,222 |
| Landlocked Countries | 0 | - | 4.99 | 422,305 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,144 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,049 |
| Australia Map Quiz | 0 | - | 4.95 | 345,240 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,846 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,882 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,692 |
| Countries that Start with H | 0 | - | 4.96 | 606,413 |
| Countries that Start with J | 0 | - | 4.98 | 604,009 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,227 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,996 |
| "Land" Countries | 0 | - | 4.98 | 337,430 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,352 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,466 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,793 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,487 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,134 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,406 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,408 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,720 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,727 |
| Countries with Z | 0 | - | 4.98 | 291,533 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,471 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,265 |
| Flags of North and South America | 0 | - | 4.99 | 374,456 |
| EU Countries Quiz | 0 | - | 4.99 | 275,694 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,079 |
| Countries that Border China | 0 | - | 4.96 | 263,587 |
| French-Speaking Countries | 0 | - | 4.85 | 270,932 |
| Countries with Five Letters | 0 | - | 4.96 | 282,600 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,497 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,453 |
| Every Country Shape | 0 | - | 5.00 | 467,712 |
| Europe Capital to Country | 0 | - | 4.99 | 250,935 |
| Longest International Borders | 0 | - | 4.99 | 265,244 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,629 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,026 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,830 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,887 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,318 |
| Megacities on a World Map | 0 | - | 4.98 | 255,431 |
| World Currency Quiz | 0 | - | 4.92 | 304,361 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,153 |
| NATO Countries | 0 | - | 4.98 | 281,667 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,151 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,858 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,054 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,446 |
| Official Cities in the UK | 0 | - | 4.89 | 284,602 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,546 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,152 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,396 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,431 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,266 |
| Countries with Megacities | 0 | - | 4.99 | 264,755 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,813 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,394 |
| World Capitals by Map | 0 | - | 5.00 | 287,555 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,927 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,498 |
| World's Busiest Airports | 0 | - | 4.96 | 235,103 |
| Country Chain | 0 | - | 4.96 | 217,608 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,920 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,934 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,401 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,079 |
| Independence from Whom | 0 | - | 4.99 | 212,174 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,801 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,257 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,674 |
| Countries with Six Letters | 0 | - | 4.94 | 213,625 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,933 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,415 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,074 |
| Flags of Oceania | 0 | - | 5.00 | 260,652 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,876 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,749 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,868 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,617 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,897 |
| Countries in their Native Language | 0 | - | 4.99 | 199,106 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,381 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,840 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,557 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,961 |
| Monarchies of the World | 0 | - | 4.94 | 169,297 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,748 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,814 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,993 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,582 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,693 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,962 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,140 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,641 |
| Countries That End in Y | 0 | - | 4.91 | 185,890 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,840 |
| Olympic Host Countries | 0 | - | 4.98 | 201,154 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,295 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,691 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,228 |
| Every European Country Shape | 0 | - | 4.96 | 202,264 |
| Countries of the Middle East | 0 | - | 4.96 | 201,744 |
| Countries by Official Language | 0 | - | 4.95 | 195,313 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,159 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,687 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,799 |
| Counties of Ireland | 0 | - | 4.92 | 196,108 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,198 |
| Countries Bordering India | 0 | - | 4.98 | 163,578 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,775 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,985 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,178 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,699 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,252 |
| European Cities by Clue | 0 | - | 4.70 | 89,098 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,527 |
| Islands by Country #2 | 0 | - | 4.80 | 77,568 |
