Theory World 2: Gamma

Theory World 2: Gamma (JP: Theory Story 2: Graceful Gamma) is the third version RPG of Theory World 2: Alpha and Beta. It was released on February 2016.

Plot
Mostly unchanged from Theory World 2: Alpha and Beta, albeit it introduces a new villainess named Gertrude Marx, Aristotle's younger cousin. After beating Aristotle, the player must also defeat her after going through eight more worlds.

Differences From Alpha and Beta

 * Has 16 worlds, which is twice the amount of Alpha and Beta.
 * Gertrude Marx is introduced.
 * Players can now add new items on the silent playable character called Auxiliary Labels, which were inspired by Super Smash Bros. Brawl's stickers.

Missing Teammates
Similar to Theory World: Sunset, there were a few teammates excluded in this version who were playable in either Alpha or Beta.

Not in Gamma

 * Marilou the Otter (Playable in Alpha)
 * Toshio Samo (Playable in Beta)
 * Tokiko Okina (Playable in Alpha)