| Island Countries | 0 | - | 4.99 | 712,489 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,587 |
| European Countries by Clue | 0 | - | 4.92 | 184,145 |
| Countries by Military Spending | 0 | - | 4.93 | 178,977 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,623 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,864,095 |
| US States Quiz | 0 | - | 5.00 | 16,991,821 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,651,744 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,910 |
| World Capitals Quiz | 0 | - | 5.00 | 5,104,861 |
| Europe Map Quiz | 0 | - | 5.00 | 4,787,191 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,847,982 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,186 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,545,694 |
| Random Capital to Country | 0 | - | 4.99 | 2,601,221 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,803,224 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,363 |
| All Country Flags of the World | 0 | - | 5.00 | 3,711,848 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,122,717 |
| Countries that Start with B | 0 | - | 4.95 | 2,306,024 |
| Countries that Start with A | 0 | - | 4.98 | 2,175,262 |
| Countries of Africa | 0 | - | 5.00 | 2,558,990 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,318 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,698,451 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,450 |
| Countries that Start with C | 0 | - | 4.96 | 1,831,100 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,173 |
| Countries that Start with S | 0 | - | 4.98 | 1,762,857 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,851 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,599,119 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,888,588 |
| Countries that Start with G | 0 | - | 4.97 | 1,511,217 |
| Countries that Start with M | 0 | - | 4.97 | 1,388,020 |
| Countries that Start with E | 0 | - | 4.95 | 1,384,794 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,446 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,955 |
| Countries that Start with I | 0 | - | 4.92 | 1,294,337 |
| Countries that Start with P | 0 | - | 4.94 | 1,221,804 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,492 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,045 |
| Countries that Start with N | 0 | - | 4.93 | 1,123,631 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,257,524 |
| Countries that Start with L | 0 | - | 4.98 | 1,096,575 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,647 |
| Random Country to Capital | 0 | - | 4.98 | 927,761 |
| Countries that Start with T | 0 | - | 4.90 | 1,014,754 |
| Biggest Cities in the United States | 0 | - | 4.94 | 986,758 |
| Asia Map Quiz | 0 | - | 4.99 | 924,920 |
| Countries that Start with U | 0 | - | 4.97 | 908,351 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,001 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,119 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,345 |
| Counties of England | 0 | - | 4.97 | 802,699 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,513 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,199 |
| Top World Languages | 0 | - | 4.92 | 829,535 |
| Countries of South America | 0 | - | 5.00 | 932,368 |
| Africa Capitals Quiz | 0 | - | 4.99 | 743,522 |
| Asia Capitals Quiz | 0 | - | 4.98 | 698,679 |
| Countries that Start with K | 0 | - | 4.97 | 820,585 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,388 |
| US States with an Empty Map | 0 | - | 5.00 | 628,538 |
| Countries that Start with V | 0 | - | 4.98 | 611,908 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,038 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,078 |
| Flags of Asia Quiz | 0 | - | 4.99 | 619,988 |
| Countries that Start with D | 0 | - | 4.96 | 716,193 |
| Countries That Border Russia | 0 | - | 4.98 | 464,439 |
| One Border Countries | 0 | - | 4.98 | 471,853 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,434 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,908 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,588 |
| Countries with Four Letters | 0 | - | 4.99 | 425,708 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,518 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,220 |
| Countries Bordering France | 0 | - | 4.83 | 404,843 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,416 |
| Northernmost Countries | 0 | - | 4.99 | 363,902 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,183 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,625 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,786 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,612 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,996 |
| Landlocked Countries | 0 | - | 4.99 | 425,597 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,795 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,036 |
| Australia Map Quiz | 0 | - | 4.95 | 346,107 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,972 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,538 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,572 |
| Countries that Start with H | 0 | - | 4.96 | 609,410 |
| Countries that Start with J | 0 | - | 4.98 | 606,786 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,775 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,882 |
| "Land" Countries | 0 | - | 4.98 | 338,340 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,951 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,178 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,067 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,366 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,983 |
| Flags of Africa Quiz | 0 | - | 5.00 | 477,326 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,671 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,253 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,706 |
| Countries with Z | 0 | - | 4.98 | 292,399 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,585 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,995 |
| Flags of North and South America | 0 | - | 4.99 | 376,822 |
| EU Countries Quiz | 0 | - | 4.99 | 277,802 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,164 |
| Countries that Border China | 0 | - | 4.96 | 264,237 |
| French-Speaking Countries | 0 | - | 4.85 | 271,646 |
| Countries with Five Letters | 0 | - | 4.96 | 283,711 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,174 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,287 |
| Every Country Shape | 0 | - | 5.00 | 470,894 |
| Europe Capital to Country | 0 | - | 4.99 | 252,020 |
| Longest International Borders | 0 | - | 4.99 | 265,795 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,870 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,631 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,264 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,588 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,090 |
| Megacities on a World Map | 0 | - | 4.98 | 256,841 |
| World Currency Quiz | 0 | - | 4.92 | 306,617 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,216 |
| NATO Countries | 0 | - | 4.98 | 283,339 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,550 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,885 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,761 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,307 |
| Official Cities in the UK | 0 | - | 4.89 | 286,161 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,435 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,557 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,087 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,088 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,786 |
| Countries with Megacities | 0 | - | 4.99 | 267,008 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,572 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,374 |
| World Capitals by Map | 0 | - | 5.00 | 289,265 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,295 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,957 |
| World's Busiest Airports | 0 | - | 4.96 | 237,181 |
| Country Chain | 0 | - | 4.96 | 218,412 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,868 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,593 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,320 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,658 |
| Independence from Whom | 0 | - | 4.99 | 213,017 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,397 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,841 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,009 |
| Countries with Six Letters | 0 | - | 4.94 | 214,439 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,228 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,685 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,042 |
| Flags of Oceania | 0 | - | 5.00 | 262,587 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,718 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,308 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,190 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,423 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,932 |
| Countries in their Native Language | 0 | - | 4.99 | 199,704 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,349 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,616 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,907 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,435 |
| Monarchies of the World | 0 | - | 4.94 | 170,164 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,264 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,928 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,612 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,975 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,562 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,214 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,930 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,124 |
| Countries That End in Y | 0 | - | 4.91 | 186,082 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,658 |
| Olympic Host Countries | 0 | - | 4.98 | 201,926 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,529 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,207 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,640 |
| Every European Country Shape | 0 | - | 4.96 | 202,955 |
| Countries of the Middle East | 0 | - | 4.96 | 202,877 |
| Countries by Official Language | 0 | - | 4.95 | 195,960 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,794 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,123 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,103 |
| Counties of Ireland | 0 | - | 4.92 | 197,253 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,709 |
| Countries Bordering India | 0 | - | 4.98 | 163,807 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,213 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,139 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,812 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,971 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,625 |
| European Cities by Clue | 0 | - | 4.70 | 89,173 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,408 |
| Islands by Country #2 | 0 | - | 4.80 | 77,852 |
