Astro Bot enthusiasts are familiar with the origin story of the sponge power-up, but few realize Team Asobi experimented with even more unconventional mechanics like coffee grinders and roulette wheels during development.

This revelation came to light during Nicolas Doucet's GDC 2025 presentation titled "The Making of 'ASTRO BOT'" where the Team Asobi director unveiled never-before-seen prototypes and abandoned concepts from the PlayStation platformer's creation process.

Doucet began by recounting Astro Bot's origins – conceived just months after Team Asobi formed in 2021, the project underwent 23 pitch revisions before executive approval. Interestingly, the studio initially presented their vision through an illustrated comic strip showcasing core gameplay pillars.

The creative director detailed Team Asobi's unconventional brainstorming approach, where multidisciplinary groups of 5-6 developers generated ideas through handwritten/drawn sticky notes. This produced fascinating concept boards filled with potential gameplay elements.

According to Doucet, only 10% of brainstormed ideas progressed to prototyping phase. The studio maintained dedicated prototyping programmers – including some focused on non-platforming experiments – which ultimately birthed key mechanics like the beloved sponge power.

The presentation showcased numerous prototype concepts that never made the final cut, including:

• A tennis minigame
• Wind-up toy mechanics
• A functional roulette wheel
• Coffee grinding gameplay

Doucet emphasized Astro Bot's strict "no repetition" philosophy regarding level design. One avian-themed stage was scrapped when featuring similar monkey mechanics to existing levels. "We prioritized uniqueness over content volume," the director explained.

The presentation concluded with revelations about Astro Bot's emotional finale, originally featuring a completely dismembered protagonist. This proved too distressing during playtesting, prompting adjustments to the version players experience today.