The Game Idea:

The game would be set in a world that has 4 suns, each of them having a unique effect on the world depending on which one is active at the moment. Every 1000 years the 4 suns align which causes a cataclysmic event that summons the God of Suns which can only be defeated using the Dark Sword, but it was destroyed in the previous encounter. To rebuild the sword, the player needs to defeat 3 bosses and needs to collect life flowers. The game ends with the epic battle between the player and the God of Suns.

I may or may not turn this idea into a real game in the future.

01 - The 4 Suns of Destiny

This would be the opening song of the game.

02 - The Sun of Nature

The Sun of Nature is the hottest sun out of the 4 and it provides the perfect temperature for nature to grow. The boss, The Spirit of Nature is the strongest when this sun is active.

03 - The Sun of Water

The Sun of Water causes the world to rain a lot, which raises the oceans. Oceanic creatures also become more active and the Leviathan only shows up during this time.

04 - The Sun of Stars

The Sun of Stars is orbited by many falling stars which makes the sky look gorgeous. At this time, wyverns show up in the sky, including the Cosmic Wyvern as well, which disguises itself as a regular white wyvern.

05 - The Sun of Life

The Sun of Life turns the dead creatures and plants into these small glowing flowers called Life Flowers. This sun only shows up for a few days.

06 - The Final Battle

The 4 Suns align at last, summoning the God of Suns.

07 - The End

The end. If you managed to get this far, thank you for listening!
Fun fact: the game ends on the same-ish song because the game is a timeloop. The God of Suns will always come back every 1000 years. (more time theme)