Algodoo

Basically the German Empire wearing a tophat.
Each marble starts at 10 HP and there are no marble status effects.

Attacks:
Landmine: Explodes (Lingering, 1 dmg)
Gun: Bro fires his rifle (Reccuring, 1 dmg)
Hot Tea: Bro teleports beside the hole and pulls out some tea. (Reccuring, 1 dmg)
Luftwaffe: Four bombs come in. (Single, 1 dmg)
Crying: Bro cries. Stops at 28k HP. (Single, 1 dmg)
Knife Dance: Bro spawns four knives that last until 23.5k hp. (Single, 1 dmg)
why: A "why" spawns and damages all marbles in the "why". (Single, 1 dmg)
Super Gun: Basically Gun but it's a single attack and can insta kill. (Single, 10 dmg)
Wiener Worm: Spawns in a wiener worm. (Single, 2 dmg)
Stalingrad Snowpile: Snow falls from above and stays on the ground until they fall. (Single, 1 dmg)
Gray Ball: Spawns a gray ball (1 dmg)
Red Ball: Spawns a red ball (2 dmg)
THE FOG IS COMING THE FOG IS COMING THE FOG IS COMING: sends fog (2 dmg)

Full run on my Youtube channel. It has the same name as my Algobox name.

Credit to Richman02 for the splash text and Boai for the boss taking damage mechanics.