What happens when time () reaches its limit?
Can a pico-8 game run longer than 32,767 (9h 6m)?

...I assume that time() returns -32,768 and cycles around, but I haven't tested that - a program like

repeat
    print(time())
    flip()
until false

left running for 9 hours and 7 minutes could probably test that?

it seems like a doable experiment.