| Island Countries | 0 | - | 4.99 | 710,460 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,474 |
| European Countries by Clue | 0 | - | 4.92 | 183,653 |
| Countries by Military Spending | 0 | - | 4.93 | 177,762 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,543 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,468,792 |
| US States Quiz | 0 | - | 5.00 | 16,878,787 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,125 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,795 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,665 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,720 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,386 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,040 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,485 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,733 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,324 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,245 |
| All Country Flags of the World | 0 | - | 5.00 | 3,665,759 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,950 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,662 |
| Countries that Start with A | 0 | - | 4.98 | 2,162,973 |
| Countries of Africa | 0 | - | 5.00 | 2,537,725 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,332 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,689,944 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,986 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,341 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,127 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,052 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,898 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,689 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,295 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,543 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,868 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,388 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,900 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,384 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,468 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,276 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,019 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,065 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,888 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,523 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,894 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,202 |
| Random Country to Capital | 0 | - | 4.98 | 920,743 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,975 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,593 |
| Asia Map Quiz | 0 | - | 4.99 | 917,030 |
| Countries that Start with U | 0 | - | 4.97 | 904,605 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,247 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,463 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,522 |
| Counties of England | 0 | - | 4.97 | 797,004 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,538 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,503 |
| Top World Languages | 0 | - | 4.92 | 822,372 |
| Countries of South America | 0 | - | 5.00 | 925,245 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,838 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,055 |
| Countries that Start with K | 0 | - | 4.97 | 815,927 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,608 |
| US States with an Empty Map | 0 | - | 5.00 | 624,726 |
| Countries that Start with V | 0 | - | 4.98 | 609,425 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,670 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,097 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,742 |
| Countries that Start with D | 0 | - | 4.96 | 709,795 |
| Countries That Border Russia | 0 | - | 4.98 | 461,793 |
| One Border Countries | 0 | - | 4.98 | 468,683 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,799 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,517 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,314 |
| Countries with Four Letters | 0 | - | 4.99 | 422,525 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,524 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,919 |
| Countries Bordering France | 0 | - | 4.83 | 402,605 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,385 |
| Northernmost Countries | 0 | - | 4.99 | 361,280 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,524 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,079 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,465 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,094 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,676 |
| Landlocked Countries | 0 | - | 4.99 | 420,648 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,275 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,484 |
| Australia Map Quiz | 0 | - | 4.95 | 344,660 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,215 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,738 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,438 |
| Countries that Start with H | 0 | - | 4.96 | 604,881 |
| Countries that Start with J | 0 | - | 4.98 | 602,565 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,475 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,486 |
| "Land" Countries | 0 | - | 4.98 | 336,587 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,926 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,824 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,655 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,973 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,730 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,499 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,600 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,433 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,626 |
| Countries with Z | 0 | - | 4.98 | 290,787 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,980 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,835 |
| Flags of North and South America | 0 | - | 4.99 | 373,176 |
| EU Countries Quiz | 0 | - | 4.99 | 274,355 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,529 |
| Countries that Border China | 0 | - | 4.96 | 263,201 |
| French-Speaking Countries | 0 | - | 4.85 | 270,534 |
| Countries with Five Letters | 0 | - | 4.96 | 281,551 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,240 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,439 |
| Every Country Shape | 0 | - | 5.00 | 465,584 |
| Europe Capital to Country | 0 | - | 4.99 | 250,352 |
| Longest International Borders | 0 | - | 4.99 | 264,959 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,305 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,426 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,392 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,442 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,994 |
| Megacities on a World Map | 0 | - | 4.98 | 254,602 |
| World Currency Quiz | 0 | - | 4.92 | 303,150 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,806 |
| NATO Countries | 0 | - | 4.98 | 280,494 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,927 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,316 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,577 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,954 |
| Official Cities in the UK | 0 | - | 4.89 | 283,800 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,078 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,973 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,016 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,055 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,014 |
| Countries with Megacities | 0 | - | 4.99 | 263,510 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,403 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,922 |
| World Capitals by Map | 0 | - | 5.00 | 286,506 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,706 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,861 |
| World's Busiest Airports | 0 | - | 4.96 | 233,703 |
| Country Chain | 0 | - | 4.96 | 217,114 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,407 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,051 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,020 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,713 |
| Independence from Whom | 0 | - | 4.99 | 211,739 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,457 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,685 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,490 |
| Countries with Six Letters | 0 | - | 4.94 | 212,955 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,749 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,233 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,620 |
| Flags of Oceania | 0 | - | 5.00 | 259,508 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,407 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,431 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,667 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,365 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,886 |
| Countries in their Native Language | 0 | - | 4.99 | 198,473 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,072 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,235 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,295 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,572 |
| Monarchies of the World | 0 | - | 4.94 | 168,734 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,133 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,385 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,644 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,266 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,169 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,726 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,888 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,856 |
| Countries That End in Y | 0 | - | 4.91 | 185,753 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,442 |
| Olympic Host Countries | 0 | - | 4.98 | 200,773 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,806 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,537 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,983 |
| Every European Country Shape | 0 | - | 4.96 | 201,759 |
| Countries of the Middle East | 0 | - | 4.96 | 201,211 |
| Countries by Official Language | 0 | - | 4.95 | 194,957 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,961 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,420 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,588 |
| Counties of Ireland | 0 | - | 4.92 | 195,360 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,945 |
| Countries Bordering India | 0 | - | 4.98 | 163,442 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,602 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,874 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,927 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,567 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,851 |
| European Cities by Clue | 0 | - | 4.70 | 89,057 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,194 |
| Islands by Country #2 | 0 | - | 4.80 | 77,439 |
