In Tini Airport on Roblox, “multiply floors” usually means making the terminal taller by adding extra building levels or stacking floor sections in build mode. Based on the available info, the game appears to use a floor/building workflow where you open build mode, select the flooring tab, and place or extend floor pieces to expand the airport layout.

How to do it

  1. Open the game’s build mode.
  2. Go to the flooring section.
  3. Place a floor piece, then extend it outward or upward as the build system allows.
  4. Keep adding connected floor sections to create a second level or a larger multi-floor terminal.

Important note

The search results did not show a specific official Tini Airport guide for a true “multi-floor” feature, so the exact steps may depend on the game’s current update or whether the builder allows vertical stacking. If the game only supports flat expansion, you may need stairs, ramps, or a separate upper platform rather than a literal floor multiplier.

Quick tip

If you mean a different Roblox airport game, the wording may change the method a lot. Some Roblox building games use separate game passes or special build tools for multiple floors, while others only let you place floors manually.

TL;DR: Open build mode, choose flooring, and keep extending the floor pieces; if Tini Airport does not support vertical floors directly, it may only allow horizontal expansion.