I recently found a zenith space command for sale (a tv I always wanted),but since the screen is 13 inches I wanted to know if the tv has a high enough resolution for gaming consoles like the nes, snes, sega dreamcast and such.

CRT sets aren't fixed-pixel so you're good to go.

Congrats on your find.

IIRC this model has no A/V inputs so its gotta go through
the antenna input. About this vintage you may want to
find either a 19" System 3 or the newer Advanced System 3.
S-3 sets have a comb filter that will help. Only a few rare
models had A/V jacks. 13" S-3 sets did not have comb filters.

Advanced S-3 sets ( 20" + ) had comb filters & most have A/V jacks.
They also came in cube styling 20 " that has about the same
footprint as a 13".

73 Zeno:smoke:

A 19 would probably be great, as the area I have is somewhat small and the tv that is being used in that area currently is a 17 inch flat-screen.