Fillbots 2

Fillbots 2 (かえってきた ロボット工場・オイル), known in Rhythm Heaven as Fillbots (ロボット工場), is the 3rd Rhythm Game (3rd overall) of the first stage in Rhythm Heaven and the 2nd of Honeybee Tower (34th overall) in Rhythm Heaven Megamix.

The short version, Fillbots, appears in Honeybee Land in Rhythm Heaven Megamix.

The arrange version, Fillbots 2, appears in the eight stage of Rhythm Heaven.

Gameplay
The game takes place at the feuling station of the factory, where Robots fall down and assemble themselves on the right side, before moving down the conveyor belt to the fueling pump. The objective is to hold down the pump at the right time to fuel up robots just the right amount. There are two kinds of robots the player will need to fill: a medium one (4 count) and a large one (8 count).

While the background is relatively bare in Rhythm Heaven, this is changed in Rhythm Heaven Megamix where beakers with oil bouncing through them (timed to the offbeats in the music) and gears moving the conveyor belt are added for visual variety.

Skill Star
The Skill Star appears on the first ROBO L in the game.

Challenge Land
appears in the following Challenge Train courses:
 * Full-Belly Dojo
 * Factory Tourism
 * Game Gamble: Intermediate
 * Wario...Where?

Trivia

 * In Rhythm Heaven, this game technically has three "versions" in the game; one for its own appearance, one for Fillbots 2, and one for Remix 1. However, all three of them are identical.
 * This game was known as "Robot Factory" in preview versions of the game.
 * Fillbots was succeeded in Rhythm Heaven Fever with Screwbot Factory; both involve the player trying to power robots a machine by holding the stylus or button for a specific amount of beats. They share the same name in many languages. As both are present in Rhythm Heaven Megamix, their names were altered to differentiate them. In the case of Rhythm Tengoku: The Best+, this game got the word オイル (Oiru) while Screwbot Factory got ネジ (Neji).
 * In Cheer Readers, a full ROBO M can be seen in the Practice, appearing on the open books during the "Ok, it's on!" cheer. The page used for when the player mistimes it shows an unfilled ROBO M instead.
 * There is also an unused sprite of the full unfilled ROBO M image present only in Rhythm Heaven Megamix.
 * There is a Practice theme intended for this game in Rhythm Heaven Megamix, but it goes unused.
 * This is one of the few games to retain their original tap controls, the others being Munchy Monk, Freeze Frame, Shoot-'em-up 2, and Lockstep.
 * This game appears in the "Wario… Where?" Challenge Train course. In it, ROBO Ms are made to look like Mike, and Dr. Crygor and Penny Crygor can be seen in the background.
 * There is an unused image showing a factory with a strawberry and the number 2 in Rhythm Heaven Megamix. This, alongside the information from Fillbots's Rhythm Item, implies the red oil is actually strawberry juice.