There's no step back

Hey! This is my game for the gamemaker's gamejam, it was inspired by the classic frogger. I accepted the challenge of making a game in a 20x20 pixels room.

Rule:  As the name say, you cannot take a step back, therefore,  the controls are W-S-D to move. You have to think very carefully your next movement.

Music by 8-BITchin'tendo.