The mod 'Build many buildings at once for The Riftbreaker' enhances gameplay by allowing players to construct multiple buildings simultaneously with ease. By simply holding the left mouse button, players can create structures without the risk of misalignment, significantly improving efficiency during gameplay. This feature is particularly useful for players who wish to streamline their base-building process in the game.

Additionally, the mod introduces a visual cue for buildings that may overwrite existing structures. Buildings highlighted in yellow indicate that they can replace another building, helping players manage their construction more intuitively. This update to version 2.0 of The Riftbreaker showcases changes to specific LUA files, enhancing the overall user experience and providing a more organized building process.