When Blender Starts Up...

it opens with one of my game files instead of the default scene…

i dunno what i did, i was messin around the other day, and now it opens with the file i had open at the time…

You pressed Control U (save settings as default settings, this includes the scene).
To fix this, do File>Load Factory Settings, and then press Control U to save those as your default.
I always keep a backup .B.blend file so if I accidentally screw it up, I won’t lose my settings. If you use the default configuration, then this doesn’t matter!

phew, thanks.
it works.