The Borg Sphere is a Grade 5 Epic Battleship, unlockable at Ops Level 55+, and it runs on two exclusive tech systems instead of standard ship research: the Borg Operating Table (PFT) and the Interplexing Beacon (CT). Both need upgrading alongside the ship's own tier and function like a dedicated research tree, but every buff from either system only applies to the Borg Sphere itself.
The Borg Sphere is required to fight the Conqueror Borg Suppressor and Obliterator in Assimilated Sol. Standard ships are not effective against them by design. The Borg Operating Table boosts Warp Speed, Apex Shred (counters a Grade 5 hostile buff), Critical Damage reduction (counters a Grade 6 hostile buff) and Critical Damage. The Interplexing Beacon adds a Hyperthermic Stabilizer (counters the Obliterator's Hyperthermic Resonance Beam), Critical Chance reduction (counters a Grade 7 hostile buff) and Shield Mitigation reduction. The Suppressor is always present and is needed for the new weekly tasks. The Obliterator spawns less often and gives more points, but has a high chance of instant kill. Upgrading the Interplexing Beacon lowers that risk.
Two free Refits unlock at tier milestones. Transwarp Drive (Tier 4) instantly warps you to another system using Transwarp Manifolds, and unlocks a daily Manifold chest via the Maverick Faction. Assimilation Protocol (Tier 5) applies an Assimilate state to target players for 2 rounds from combat start. Three passives help against the Conqueror hostiles: Quantum Nullification Pulse disables their instant-kill Quantum Resonance Beam, Omicron Particle Charge increases base damage, and Apex Dispersion Field increases Apex Barrier. The Sphere unlocks the Maverick Faction weekly tasks and is required to complete them. There are 5 solo hunts, each needing a higher Sphere tier. You can score on several at once. An Alliance version counts each member's solo tasks. Rewards include 3 Artifacts and a choice of Ship Parts.