| Island Countries | 0 | - | 4.99 | 710,312 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,420 |
| European Countries by Clue | 0 | - | 4.92 | 183,626 |
| Countries by Military Spending | 0 | - | 4.93 | 177,717 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,413 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,444,811 |
| US States Quiz | 0 | - | 5.00 | 16,872,194 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,270 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,200 |
| World Capitals Quiz | 0 | - | 5.00 | 5,072,566 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,488 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,278 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,202 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,059 |
| Random Capital to Country | 0 | - | 4.99 | 2,590,898 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,431 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,691 |
| All Country Flags of the World | 0 | - | 5.00 | 3,662,908 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,337 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,007 |
| Countries that Start with A | 0 | - | 4.98 | 2,162,277 |
| Countries of Africa | 0 | - | 5.00 | 2,536,501 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,174 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,689,448 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,623 |
| Countries that Start with C | 0 | - | 4.96 | 1,821,767 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,855 |
| Countries that Start with S | 0 | - | 4.98 | 1,754,554 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,435 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,036 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,353 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,038 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,478 |
| Countries that Start with E | 0 | - | 4.95 | 1,376,944 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,591 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,260 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,097 |
| Countries that Start with P | 0 | - | 4.94 | 1,215,929 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,658 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,853 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,515 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,243,839 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,552 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,066 |
| Random Country to Capital | 0 | - | 4.98 | 920,294 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,704 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,173 |
| Asia Map Quiz | 0 | - | 4.99 | 916,640 |
| Countries that Start with U | 0 | - | 4.97 | 904,393 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,710 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,014 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,390 |
| Counties of England | 0 | - | 4.97 | 796,606 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,309 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,203 |
| Top World Languages | 0 | - | 4.92 | 822,004 |
| Countries of South America | 0 | - | 5.00 | 924,840 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,540 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,746 |
| Countries that Start with K | 0 | - | 4.97 | 815,653 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,516 |
| US States with an Empty Map | 0 | - | 5.00 | 624,474 |
| Countries that Start with V | 0 | - | 4.98 | 609,278 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,497 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,007 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,394 |
| Countries that Start with D | 0 | - | 4.96 | 709,399 |
| Countries That Border Russia | 0 | - | 4.98 | 461,704 |
| One Border Countries | 0 | - | 4.98 | 468,530 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,713 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,322 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,132 |
| Countries with Four Letters | 0 | - | 4.99 | 422,344 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,402 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,748 |
| Countries Bordering France | 0 | - | 4.83 | 402,512 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,269 |
| Northernmost Countries | 0 | - | 4.99 | 361,139 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,430 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,996 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,374 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,011 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,613 |
| Landlocked Countries | 0 | - | 4.99 | 420,299 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,156 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,388 |
| Australia Map Quiz | 0 | - | 4.95 | 344,588 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,103 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,547 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,199 |
| Countries that Start with H | 0 | - | 4.96 | 604,612 |
| Countries that Start with J | 0 | - | 4.98 | 602,298 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,348 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,384 |
| "Land" Countries | 0 | - | 4.98 | 336,143 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,851 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,664 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,448 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,904 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,663 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,150 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,460 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,388 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,408 |
| Countries with Z | 0 | - | 4.98 | 290,616 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,900 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,758 |
| Flags of North and South America | 0 | - | 4.99 | 373,019 |
| EU Countries Quiz | 0 | - | 4.99 | 274,090 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,412 |
| Countries that Border China | 0 | - | 4.96 | 263,137 |
| French-Speaking Countries | 0 | - | 4.85 | 270,476 |
| Countries with Five Letters | 0 | - | 4.96 | 281,291 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,185 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,266 |
| Every Country Shape | 0 | - | 5.00 | 465,214 |
| Europe Capital to Country | 0 | - | 4.99 | 250,053 |
| Longest International Borders | 0 | - | 4.99 | 264,915 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,064 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,371 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,135 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,386 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,941 |
| Megacities on a World Map | 0 | - | 4.98 | 254,457 |
| World Currency Quiz | 0 | - | 4.92 | 302,948 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,754 |
| NATO Countries | 0 | - | 4.98 | 280,292 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,888 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,221 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,505 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,885 |
| Official Cities in the UK | 0 | - | 4.89 | 283,663 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,998 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,943 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,966 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,994 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,967 |
| Countries with Megacities | 0 | - | 4.99 | 263,205 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,343 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,855 |
| World Capitals by Map | 0 | - | 5.00 | 286,368 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,675 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,822 |
| World's Busiest Airports | 0 | - | 4.96 | 233,499 |
| Country Chain | 0 | - | 4.96 | 217,074 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,341 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,908 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,949 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,633 |
| Independence from Whom | 0 | - | 4.99 | 211,677 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,361 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,640 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,462 |
| Countries with Six Letters | 0 | - | 4.94 | 212,806 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,732 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,202 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,541 |
| Flags of Oceania | 0 | - | 5.00 | 259,060 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,312 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,381 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,636 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,332 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,751 |
| Countries in their Native Language | 0 | - | 4.99 | 198,434 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,029 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,176 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,242 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,524 |
| Monarchies of the World | 0 | - | 4.94 | 168,640 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,976 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,300 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,597 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,195 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,079 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,695 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,862 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,737 |
| Countries That End in Y | 0 | - | 4.91 | 185,718 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,373 |
| Olympic Host Countries | 0 | - | 4.98 | 200,710 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,731 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,515 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,941 |
| Every European Country Shape | 0 | - | 4.96 | 201,573 |
| Countries of the Middle East | 0 | - | 4.96 | 201,146 |
| Countries by Official Language | 0 | - | 4.95 | 194,903 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,939 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,382 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,545 |
| Counties of Ireland | 0 | - | 4.92 | 195,217 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,905 |
| Countries Bordering India | 0 | - | 4.98 | 163,425 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,584 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,857 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,892 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,544 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| European Cities by Clue | 0 | - | 4.70 | 89,051 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,182 |
| Islands by Country #2 | 0 | - | 4.80 | 77,419 |
