Only by completing the seven trials will you earn your wings in Daniel Linssen's Birdsong. You are a young bird leaving the nest for the first time. As you leave, the world seems to stretch out before you, so that it's all in view but just out of your reach.
You can move your character with [A] and [D] or the arrow keys, and jump with either [W], the [Up] key or [Spacebar]. Pressing [Enter] at certain pedestals builds a nest, which functions as a save point, and [R] resets you to your last save point. The entire game is one large area which you'll explore in order to collect twigs to build nests with, find medallions to bring you closer to your wings, and activate pedestals to grant you abilities like higher jumps or wall-jumping. Certain parts of the world won't be accessible until you gain certain abilities, and you'll spend the game exploring until every part of the world is within reach.
With its simple but evocative pixel-art style, Birdsong creates a moody and mysterious world, whose puzzles are both satisfying and fiendishly difficult. Don't be surprised if you find yourself plunging to your death more than a few times, it's all part of the journey.