Polymer Bundle farming guide
Uranus — Ophelia (Survival)
Uranus is Polymer Bundle’s primary planet, so nearly every resource drop here is a bundle; Ophelia also nets Tellurium on the side.
Boosters help: this spot relies on enemy drop tables.
Uranus — Assur (Dark Sector Survival, Steel Path)
Same Dark Sector Grineer Galleon chokepoints used for Plastids double as an efficient Steel Path Polymer Bundle squad farm.
Boosters help: this spot relies on enemy drop tables.
Early game
Ophelia on Uranus (Survival) is a natural first stop, since Uranus has the highest Polymer Bundle drop chance of any planet — nearly every resource pickup on this Survival is a bundle, and it nets Tellurium on the side for later weapon builds.
Mid & late game
Assur on the same planet (Dark Sector Survival, Infested Grineer Galleon, Steel Path) edges Ophelia out for a geared squad: its cramped chokepoints concentrate the large Infested population that spawns there, and running with a Nekros or Hydroid to re-roll enemy drops squeezes extra bundles out of every kill on top of the Dark Sector’s resource bonus.