how do i make like, seasonal events? (like events only tied to the system date)

i want to make a mini halloween update for one of my games, but i have no idea how to make it only work when its in october please help

Have a look at the "date" plugin, you can probably get the "month" to make sure it's October and the the whole month can active specific events for halloween vibes.

Or be even more specific and limit it to only October and last week of October.

The plugin is surprisingly detailed but you would only need a few of the actions involved, have a read here:

construct.net/en/make-games/manuals/construct-3/plugin-reference/date