Apple is an object found in Elasto Mania game. The rider´s goal is to collect all apples, avoid killers and touch the flower in the shortest time possible. In the Default.lgr there are two graphic variants of apples.
Apples can also bestow the change of gravity, so the kuski(rider) will behave different - he will fall left, right or up as though it was down. The gravity can be restored by taking down gravity apple.
The term "Hooked bug" is well known issue, where the kuski takes one apple with both wheels or wheel and head almost simultaneously, resulting in counting the apple taken twice. This means player can finish the level without taking one apple. The name is given after internal level 53: Hooked, where is relatively easy chance to get this bug.