Games Like Dungeon Man

You are the Dungeon Man!
You spent your youth hearing tales of a mysterious dungeon guarded by a dangerous fiend known as the toilet snake.
The toilet snake is said to have arrived from an unknown land filled with powerful gems. The toilet snake uses these gems to command a great power.
You have stumbled upon the entrance to the dungeon and found a mysterious white gem.
Step inside the dungeon to find what power the gem holds.
Only by defeating the evil toilet snake can you unlock the true power of the gems.

In this top down bullet-hell you make your way through the mysterious dungeon using the colors of the gems to defeat your enemies.
Mix and match colors to deal the most damage.