Brain Test: Tricky Words – LEVEL 17 (What needs light to survive, but too much of light also destroys it?) – ANSWER. This is a new game from the developers of the trilogy of games “Brain Test” that we liked. Now we have to guess what kind of word is hidden in the picture. Sometimes at the introductory levels we will be prompted what kind of word is hidden. But with each level, the game becomes more difficult. Completing a level can take a long time. Therefore, you can use the help of friends and family. But if you can’t pass one or more levels anyway, then use the help of our website.