Each unidentified flying object is fully scripted in a unique way and is spawnable!
(Since a lot of people in the comments have said they don't know how to spawn things from mods in Teardown, in-game press escape, select "spawn" from the bottom of the screen to access the Teardown Spawn Menu, then select "Parking Meter's Spawnable Flying Saucer Pack", and choose a saucer you'd like to spawn).
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