That was super cute!
This is my first PICO-8 game, made for Ludum Dare 39. The theme was "RUNNING OUT OF POWER".
You play as a tiny battery that has to collect five letters (A, E, I, O and U) to win the game! You have a limited amount of energy. You can stop at the top yellow charging stations to recharge your power. You can also pick up extra power packs to expand your maximum power. That makes it possible to go longer without needing to recharge!
Controls: Z or X to start. Arrow keys to move.