| Island Countries | 0 | - | 4.99 | 710,319 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,421 |
| European Countries by Clue | 0 | - | 4.92 | 183,627 |
| Countries by Military Spending | 0 | - | 4.93 | 177,721 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,421 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,446,228 |
| US States Quiz | 0 | - | 5.00 | 16,872,616 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,355 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,240 |
| World Capitals Quiz | 0 | - | 5.00 | 5,072,695 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,577 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,358 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,247 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,077 |
| Random Capital to Country | 0 | - | 4.99 | 2,590,955 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,535 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,727 |
| All Country Flags of the World | 0 | - | 5.00 | 3,663,089 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,365 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,046 |
| Countries that Start with A | 0 | - | 4.98 | 2,162,324 |
| Countries of Africa | 0 | - | 5.00 | 2,536,581 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,181 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,689,526 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,635 |
| Countries that Start with C | 0 | - | 4.96 | 1,821,813 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,868 |
| Countries that Start with S | 0 | - | 4.98 | 1,754,588 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,471 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,068 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,408 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,078 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,501 |
| Countries that Start with E | 0 | - | 4.95 | 1,376,978 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,607 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,265 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,145 |
| Countries that Start with P | 0 | - | 4.94 | 1,215,955 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,679 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,861 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,546 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,243,887 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,579 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,073 |
| Random Country to Capital | 0 | - | 4.98 | 920,324 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,719 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,221 |
| Asia Map Quiz | 0 | - | 4.99 | 916,663 |
| Countries that Start with U | 0 | - | 4.97 | 904,407 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,734 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,056 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,396 |
| Counties of England | 0 | - | 4.97 | 796,624 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,332 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,218 |
| Top World Languages | 0 | - | 4.92 | 822,034 |
| Countries of South America | 0 | - | 5.00 | 924,883 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,550 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,751 |
| Countries that Start with K | 0 | - | 4.97 | 815,671 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,527 |
| US States with an Empty Map | 0 | - | 5.00 | 624,497 |
| Countries that Start with V | 0 | - | 4.98 | 609,291 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,515 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,024 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,410 |
| Countries that Start with D | 0 | - | 4.96 | 709,425 |
| Countries That Border Russia | 0 | - | 4.98 | 461,709 |
| One Border Countries | 0 | - | 4.98 | 468,537 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,715 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,338 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,144 |
| Countries with Four Letters | 0 | - | 4.99 | 422,356 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,413 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,762 |
| Countries Bordering France | 0 | - | 4.83 | 402,517 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,279 |
| Northernmost Countries | 0 | - | 4.99 | 361,157 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,431 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,001 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,380 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,014 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,618 |
| Landlocked Countries | 0 | - | 4.99 | 420,317 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,157 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,392 |
| Australia Map Quiz | 0 | - | 4.95 | 344,591 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,114 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,559 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,214 |
| Countries that Start with H | 0 | - | 4.96 | 604,629 |
| Countries that Start with J | 0 | - | 4.98 | 602,319 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,356 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,391 |
| "Land" Countries | 0 | - | 4.98 | 336,152 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,859 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,674 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,464 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,905 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,668 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,170 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,467 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,394 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,419 |
| Countries with Z | 0 | - | 4.98 | 290,620 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,909 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,768 |
| Flags of North and South America | 0 | - | 4.99 | 373,030 |
| EU Countries Quiz | 0 | - | 4.99 | 274,114 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,419 |
| Countries that Border China | 0 | - | 4.96 | 263,139 |
| French-Speaking Countries | 0 | - | 4.85 | 270,477 |
| Countries with Five Letters | 0 | - | 4.96 | 281,305 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,188 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,277 |
| Every Country Shape | 0 | - | 5.00 | 465,232 |
| Europe Capital to Country | 0 | - | 4.99 | 250,056 |
| Longest International Borders | 0 | - | 4.99 | 264,917 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,078 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,374 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,152 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,393 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,946 |
| Megacities on a World Map | 0 | - | 4.98 | 254,473 |
| World Currency Quiz | 0 | - | 4.92 | 302,962 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,759 |
| NATO Countries | 0 | - | 4.98 | 280,301 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,891 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,225 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,505 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,896 |
| Official Cities in the UK | 0 | - | 4.89 | 283,677 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,002 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,949 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,967 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,004 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,976 |
| Countries with Megacities | 0 | - | 4.99 | 263,234 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,354 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,862 |
| World Capitals by Map | 0 | - | 5.00 | 286,378 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,677 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,829 |
| World's Busiest Airports | 0 | - | 4.96 | 233,511 |
| Country Chain | 0 | - | 4.96 | 217,079 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,347 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,908 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,953 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,640 |
| Independence from Whom | 0 | - | 4.99 | 211,678 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,394 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,642 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,464 |
| Countries with Six Letters | 0 | - | 4.94 | 212,814 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,734 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,205 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,547 |
| Flags of Oceania | 0 | - | 5.00 | 259,063 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,319 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,386 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,638 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,334 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,759 |
| Countries in their Native Language | 0 | - | 4.99 | 198,436 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,029 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,178 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,244 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,525 |
| Monarchies of the World | 0 | - | 4.94 | 168,645 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,977 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,311 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,599 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,203 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,083 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,697 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,863 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,742 |
| Countries That End in Y | 0 | - | 4.91 | 185,720 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,381 |
| Olympic Host Countries | 0 | - | 4.98 | 200,714 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,736 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,515 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,944 |
| Every European Country Shape | 0 | - | 4.96 | 201,578 |
| Countries of the Middle East | 0 | - | 4.96 | 201,148 |
| Countries by Official Language | 0 | - | 4.95 | 194,908 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,940 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,386 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,547 |
| Counties of Ireland | 0 | - | 4.92 | 195,237 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,914 |
| Countries Bordering India | 0 | - | 4.98 | 163,426 |
| 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 | 162,894 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,546 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| European Cities by Clue | 0 | - | 4.70 | 89,053 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,184 |
| Islands by Country #2 | 0 | - | 4.80 | 77,420 |
