| Island Countries | 0 | - | 4.99 | 710,410 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,460 |
| European Countries by Clue | 0 | - | 4.92 | 183,646 |
| Countries by Military Spending | 0 | - | 4.93 | 177,753 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,506 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,463,806 |
| US States Quiz | 0 | - | 5.00 | 16,877,343 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,623,743 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,687 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,129 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,462 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,175 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,824 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,383 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,547 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,898 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,123 |
| All Country Flags of the World | 0 | - | 5.00 | 3,665,153 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,809 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,518 |
| Countries that Start with A | 0 | - | 4.98 | 2,162,820 |
| Countries of Africa | 0 | - | 5.00 | 2,537,444 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,310 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,689,869 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,913 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,224 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,053 |
| Countries that Start with S | 0 | - | 4.98 | 1,754,933 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,798 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,520 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,055 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,444 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,786 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,308 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,817 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,366 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,403 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,212 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,934 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,018 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,812 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,367 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,832 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,173 |
| Random Country to Capital | 0 | - | 4.98 | 920,654 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,913 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,502 |
| Asia Map Quiz | 0 | - | 4.99 | 916,960 |
| Countries that Start with U | 0 | - | 4.97 | 904,563 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,091 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,376 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,499 |
| Counties of England | 0 | - | 4.97 | 796,920 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,487 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,451 |
| Top World Languages | 0 | - | 4.92 | 822,293 |
| Countries of South America | 0 | - | 5.00 | 925,145 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,744 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,958 |
| Countries that Start with K | 0 | - | 4.97 | 815,860 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,595 |
| US States with an Empty Map | 0 | - | 5.00 | 624,687 |
| Countries that Start with V | 0 | - | 4.98 | 609,394 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,651 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,082 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,691 |
| Countries that Start with D | 0 | - | 4.96 | 709,720 |
| Countries That Border Russia | 0 | - | 4.98 | 461,772 |
| One Border Countries | 0 | - | 4.98 | 468,655 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,772 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,467 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,259 |
| Countries with Four Letters | 0 | - | 4.99 | 422,485 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,498 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,890 |
| Countries Bordering France | 0 | - | 4.83 | 402,584 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,362 |
| Northernmost Countries | 0 | - | 4.99 | 361,245 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,505 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,059 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,445 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,076 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,657 |
| Landlocked Countries | 0 | - | 4.99 | 420,577 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,254 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,463 |
| Australia Map Quiz | 0 | - | 4.95 | 344,641 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,204 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,686 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,373 |
| Countries that Start with H | 0 | - | 4.96 | 604,828 |
| Countries that Start with J | 0 | - | 4.98 | 602,509 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,450 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,462 |
| "Land" Countries | 0 | - | 4.98 | 336,479 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,921 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,791 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,605 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,951 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,719 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,425 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,545 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,424 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,579 |
| Countries with Z | 0 | - | 4.98 | 290,679 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,965 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,820 |
| Flags of North and South America | 0 | - | 4.99 | 373,152 |
| EU Countries Quiz | 0 | - | 4.99 | 274,286 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,502 |
| Countries that Border China | 0 | - | 4.96 | 263,186 |
| French-Speaking Countries | 0 | - | 4.85 | 270,521 |
| Countries with Five Letters | 0 | - | 4.96 | 281,421 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,233 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,404 |
| Every Country Shape | 0 | - | 5.00 | 465,491 |
| Europe Capital to Country | 0 | - | 4.99 | 250,332 |
| Longest International Borders | 0 | - | 4.99 | 264,954 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,257 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,411 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,332 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,430 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,978 |
| Megacities on a World Map | 0 | - | 4.98 | 254,562 |
| World Currency Quiz | 0 | - | 4.92 | 303,098 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,790 |
| NATO Countries | 0 | - | 4.98 | 280,455 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,919 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,290 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,545 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,944 |
| Official Cities in the UK | 0 | - | 4.89 | 283,776 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,056 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,969 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,004 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,043 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,006 |
| Countries with Megacities | 0 | - | 4.99 | 263,462 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,395 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,908 |
| World Capitals by Map | 0 | - | 5.00 | 286,479 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,699 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,855 |
| World's Busiest Airports | 0 | - | 4.96 | 233,663 |
| Country Chain | 0 | - | 4.96 | 217,108 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,400 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,032 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,003 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,701 |
| Independence from Whom | 0 | - | 4.99 | 211,727 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,446 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,665 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,481 |
| Countries with Six Letters | 0 | - | 4.94 | 212,870 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,746 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,222 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,604 |
| Flags of Oceania | 0 | - | 5.00 | 259,478 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,386 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,417 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,657 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,361 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,860 |
| Countries in their Native Language | 0 | - | 4.99 | 198,468 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,060 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,215 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,287 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,547 |
| Monarchies of the World | 0 | - | 4.94 | 168,706 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,004 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,370 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,627 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,258 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,138 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,707 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,882 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,822 |
| Countries That End in Y | 0 | - | 4.91 | 185,734 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,429 |
| Olympic Host Countries | 0 | - | 4.98 | 200,755 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,793 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,528 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,973 |
| Every European Country Shape | 0 | - | 4.96 | 201,737 |
| Countries of the Middle East | 0 | - | 4.96 | 201,195 |
| Countries by Official Language | 0 | - | 4.95 | 194,947 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,955 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,412 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,577 |
| Counties of Ireland | 0 | - | 4.92 | 195,324 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,938 |
| Countries Bordering India | 0 | - | 4.98 | 163,436 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,596 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,919 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,558 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| European Cities by Clue | 0 | - | 4.70 | 89,054 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,192 |
| Islands by Country #2 | 0 | - | 4.80 | 77,433 |
