New Invention Expo

The  is a limited-time building that was released on November 2, 2021, as part of Act 4 of the Treehouse of Horror XXXII Event. It was the third prize to be won in the event's Act 4.

Regular
Martin
 * Check Out the Latest Inventions - 5h

Quest Based
Bionaut Marge Professor Frink
 * Help Frink Conduct Research - 4h
 * Conduct Mad Research - 4h
 * Regret Not Mentioning Side Effects Earlier - 4h
 * Chase After His Bionaut Ship - 8h

Event's Quest Based
Bionaut Marge Grampasaurus Homer Lisa Professor Frink Character Groups
 * Navigate to the Brain - 4h
 * Become Compliant - 4h
 * ''Get Lost Inside Grampasaurus - 4h
 * Inject Serum Into Grampasaurus' Brain - 4h
 * Activate Shrinking Ray - 4h

Simpsons
 * Get Shrunk - 4h

Trivia

 * Only one can be obtained.
 * It can be placed on grass, pavement, dirt, krustyland road, boardwalk, pier, edge of boardwalk, or edge of pier.