| Island Countries | 0 | - | 4.99 | 709,568 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,040 |
| European Countries by Clue | 0 | - | 4.92 | 183,454 |
| Countries by Military Spending | 0 | - | 4.93 | 177,321 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,736 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,305,346 |
| US States Quiz | 0 | - | 5.00 | 16,826,406 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,123 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,318 |
| World Capitals Quiz | 0 | - | 5.00 | 5,061,353 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,538 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,114 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,781 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,144 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,420 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,285 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,285 |
| All Country Flags of the World | 0 | - | 5.00 | 3,646,391 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,663 |
| Countries that Start with B | 0 | - | 4.95 | 2,290,211 |
| Countries that Start with A | 0 | - | 4.98 | 2,158,180 |
| Countries of Africa | 0 | - | 5.00 | 2,529,113 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,331 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,686,087 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,034 |
| Countries that Start with C | 0 | - | 4.96 | 1,818,629 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,658 |
| Countries that Start with S | 0 | - | 4.98 | 1,751,913 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,698 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,097 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,147 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,040 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,236 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,401 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,866 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,415 |
| Countries that Start with I | 0 | - | 4.92 | 1,285,789 |
| Countries that Start with P | 0 | - | 4.94 | 1,213,991 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,606 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,366 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,479 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,443 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,540 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,301 |
| Random Country to Capital | 0 | - | 4.98 | 917,821 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,231 |
| Biggest Cities in the United States | 0 | - | 4.93 | 975,079 |
| Asia Map Quiz | 0 | - | 4.99 | 914,177 |
| Countries that Start with U | 0 | - | 4.97 | 903,152 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,295 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,162 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,410 |
| Counties of England | 0 | - | 4.97 | 794,537 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,021 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,331 |
| Top World Languages | 0 | - | 4.92 | 819,756 |
| Countries of South America | 0 | - | 5.00 | 922,377 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,538 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,774 |
| Countries that Start with K | 0 | - | 4.97 | 813,721 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,960 |
| US States with an Empty Map | 0 | - | 5.00 | 623,114 |
| Countries that Start with V | 0 | - | 4.98 | 608,215 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,306 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,338 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,208 |
| Countries that Start with D | 0 | - | 4.96 | 707,226 |
| Countries That Border Russia | 0 | - | 4.98 | 461,020 |
| One Border Countries | 0 | - | 4.98 | 467,467 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,242 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,277 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,878 |
| Countries with Four Letters | 0 | - | 4.99 | 421,386 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,784 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,769 |
| Countries Bordering France | 0 | - | 4.83 | 401,796 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,578 |
| Northernmost Countries | 0 | - | 4.99 | 360,274 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,886 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,483 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,530 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,533 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,994 |
| Landlocked Countries | 0 | - | 4.99 | 418,421 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,415 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,860 |
| Australia Map Quiz | 0 | - | 4.95 | 343,762 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,424 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,309 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,994 |
| Countries that Start with H | 0 | - | 4.96 | 602,757 |
| Countries that Start with J | 0 | - | 4.98 | 600,606 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,529 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,556 |
| "Land" Countries | 0 | - | 4.98 | 335,696 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,207 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 289,730 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,100 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,520 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,184 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,990 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,908 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,137 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,104 |
| Countries with Z | 0 | - | 4.98 | 289,718 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,435 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,321 |
| Flags of North and South America | 0 | - | 4.99 | 371,742 |
| EU Countries Quiz | 0 | - | 4.99 | 272,712 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,889 |
| Countries that Border China | 0 | - | 4.96 | 262,806 |
| French-Speaking Countries | 0 | - | 4.85 | 270,145 |
| Countries with Five Letters | 0 | - | 4.96 | 279,694 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,924 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,310 |
| Every Country Shape | 0 | - | 5.00 | 463,481 |
| Europe Capital to Country | 0 | - | 4.99 | 249,483 |
| Longest International Borders | 0 | - | 4.99 | 264,588 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,705 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,924 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,610 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,006 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,633 |
| Megacities on a World Map | 0 | - | 4.98 | 253,178 |
| World Currency Quiz | 0 | - | 4.91 | 301,755 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,419 |
| NATO Countries | 0 | - | 4.98 | 279,120 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,610 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,669 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,190 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,497 |
| Official Cities in the UK | 0 | - | 4.89 | 282,918 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,479 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,766 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,565 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,655 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,692 |
| Countries with Megacities | 0 | - | 4.99 | 256,299 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,954 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,358 |
| World Capitals by Map | 0 | - | 5.00 | 285,487 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,470 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,555 |
| World's Busiest Airports | 0 | - | 4.96 | 232,196 |
| Country Chain | 0 | - | 4.96 | 216,763 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,793 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,016 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,604 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,102 |
| Independence from Whom | 0 | - | 4.99 | 211,220 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,707 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,337 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,261 |
| Countries with Six Letters | 0 | - | 4.94 | 212,395 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,554 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,013 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,977 |
| Flags of Oceania | 0 | - | 5.00 | 258,058 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,798 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,071 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,452 |
| Countries Closest to Canada | 0 | - | 4.91 | 197,991 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,844 |
| Countries in their Native Language | 0 | - | 4.99 | 198,115 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,674 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,769 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,874 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,177 |
| Monarchies of the World | 0 | - | 4.94 | 168,153 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,672 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,735 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,291 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,653 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,581 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,489 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,608 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,968 |
| Countries That End in Y | 0 | - | 4.90 | 185,631 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,800 |
| Olympic Host Countries | 0 | - | 4.98 | 200,271 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,232 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,327 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,744 |
| Every European Country Shape | 0 | - | 4.96 | 201,253 |
| Countries of the Middle East | 0 | - | 4.96 | 200,680 |
| Countries by Official Language | 0 | - | 4.95 | 194,566 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,757 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,102 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,190 |
| Counties of Ireland | 0 | - | 4.92 | 194,568 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,517 |
| Countries Bordering India | 0 | - | 4.98 | 163,307 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,062 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,754 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,666 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,383 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,726 |
| European Cities by Clue | 0 | - | 4.70 | 88,995 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,112 |
| Islands by Country #2 | 0 | - | 4.80 | 77,301 |
