The Faerie Princess by Videlais is a Game Boy game released for bitbitJAM #3.
Based very loosely on the story of Saint George and the Dragon, but, you know, swapping in a princess instead of Saint George. Primarily, other than introductory text, it is a boss battle against a dragon. Get four spear-throws against it and you win. However, allow four fireballs to hurt you, and it’s game over for both you and the princess.