Here is the full list of all 28 National Geographic Challenge! trophies - there are 8 bronze, 13 silver, 6 gold and 1 platinum.
Unlock All Trophies in National Geographic Challenge!
Complete all Square puzzles. (profile owner only).
Complete all Slider puzzles. (profile owner only).
Complete all Jigsaw puzzles. (profile owner only).
Complete 5 Quizes alone (profile owner only).
Complete 5 Quizes on Hard Difficulty. (profile owner only).
Control all 6 Australian-Asian Territories in a game of Explorer.
Complete a game of Explorer with 3 other players beside you.
Control all 6 African Territories in a game of Explorer.
Control all 6 South American Territories in a game of Explorer.
Control all 6 North American Territories in a game of Explorer.
You captured a Territory in each colour in a game of Explorer.
Control all 6 Asian Territories in a game of Explorer.
Complete your first Slider puzzle.
Complete your first Square puzzle.
You have finished a round in any Quiz with a negative score, alone or with friends.
Complete 5 Quizes on Easy Difficulty (profile owner only).
Win a Long Quiz against friends.
Score over 4,000 points in a Long Quiz, alone or with friends.
Complete your first Jigsaw puzzle.
Control half the Territories in a game of Explorer.
Win 5 consecutive, competitive puzzles in a game of Explorer.
Score over 2,000 points in a Medium Quiz, alone or with friends.
Win a Puzzle Battle against another player.
Control all 6 European Territories in a game of Explorer.
Take your first steps in Explorer.
Score over 1,000 points in a Short Quiz, alone or with friends.
Play a Quiz, alone or with friends.