Mushroom Ninja: Lava caves is Nine Corporation’s first ever video game. It was released on 9Online and features the Nine Universe character Mushroom Ninja. The game was created by Nine Simon but unknown to most people the second stage was designed by Paro.

Mushroom Ninja Lava caves involves the player manoeuvring Mushroom Ninja through the lava caves while avoiding obsticals. The game set the platform for all future Nine Interactive video games.