Me and a guy called Pure LV, who is currently working with his own team on an Undertale Green game, have decided to link our game’s stories together. We decided this because the Green Soul actually comes into the Underground directly after the Purple Soul. Undertale Purple will be the chronological prequel to Team LV’s Undertale Green, and vice-versa. (Undertale Green will be the chronological sequel to our Undertale Purple.)

Team LV’s Undertale Green: http://gamejolt.com/games/undertale-green/226435

— 3JAD21, Main Dev