Factorio Forums

It's possible to set filters for the ammo slots. Default key: mouse middle-click. However it's a bit tricky to set a filter different to what is already in the slot. You need to empty that slot first to be able to set a different item as filter.

Doesn't the spidertron cycle through its ammo slots while shooting? Having mixed ammo types sounds like you're setting yourself up for an rather unwelcome surprise, especially with atomic bombs in the mix.

It's safer to use different spidertrons for the reason Nidan mention, and also because then you can use a spidertron to provide a mobile logistic network, where the bots from a spidertron can change the ammunition of another spidertron, and that is actionnable in remote view. You can even color them differently, and make sure there is always one "ammo supplier" in the mix.

mmmPI wrote: Mon Aug 31, 2026 10:26 am It's safer to use different spidertrons for the reason Nidan mention, and also because then you can use a spidertron to provide a mobile logistic network, where the bots from a spidertron can change the ammunition of another spidertron, and that is actionnable in remote view. You can even color them differently, and make sure there is always one "ammo supplier" in the mix.

Thanks. I just need to send spidertrons out in packs instead of solo.

ManicDee wrote: Mon Aug 31, 2026 1:40 pm Thanks. I just need to send spidertrons out in packs instead of solo.

Yeah still, i would recommend if you have a nuclear one, to maybe have it as a solo spidertron, to avoid friendly fire on the rest of the pack x)

mmmPI wrote: Mon Aug 31, 2026 1:56 pm Yeah still, i would recommend if you have a nuclear one, to maybe have it as a solo spidertron, to avoid friendly fire on the rest of the pack x)

No fear! The spidertron carrying the capture bots, explosive missiles or atomic bomb is only going to be firing manually. No gunner enabled at all. For most purposes the other ammunition is just for the lulz: capture a spawner in the middle of nowhere so now I have to build a railway and bioflux depot to keep it going, and may as well wrap a productivity module 3 factory around it (and perhaps an upcycler to turn surplus PM3s into Legendary PM3) so it has a purpose other than passing the butter.

When it comes to clearing biters, a handful of spidertrons with normal rockets is quite sufficient. Being able to head out in the nuka-a-tron to drop a couple of atomic bombs on biter colonies has a certain vandalistic appeal though.