@Manauense if you want support, you should create a new topic and include the information requested in https://retropie.org.uk/forum/topic/3/read-this-first

There are no Intellivision emulators in the main packages which are installed by default. Did you manually install either of the optional packages jzintv or lr-freeintv?

Quick answers...

"yes"

and

"no?"

Freeintv
I'm not near my cabinet right now so cannot go test to make sure but one of the function buttons exits the emulator. F4? I'm not 100% sure.

also check this thread at the bottom.

Nintendo DS
I'm not big on the DS but in theory it would depend on how the saved game data is stored. Some systems store the game as a data file and others store game details as a config type file. Depending on if the hamster sees its shadow you will know if the compatibility index needs three more weeks of adjusting. There is an alternative however if you can get the loop bolt tight enough on the nutella . I skip that as I hate the taste of that stuff ...and...and... okay, ya got me I have no idea on this one.

So., I sound a lot smarter if I just go back to ........no?