Build a base RNG Structure Tier List
Structure tier list for Build a base RNG Roblox: S to D rankings for income generators, factories, and rolled economic buildings.
Structure Rankings
Structures fuel every Roll in Build a base RNG. These rankings prioritize sustained income, offline scaling, and upgrade ceiling.
Community-maintained rankings based on income data, wave clear rates, and post-BOSSES UPDATE testing. Slungpy Games balance patches can shift tiers — verify in-game after each update on our patch hub.
Structure Tiers
| Tier | Examples | Why |
|---|---|---|
| S | Relic-boosted factories, multi-chain generators | Top income per tile, scales offline |
| A | Legendary generators, combo structures | Near-meta without boss crafts |
| B | Epic income buildings, mid luck Rolls | Solid mid-game workhorses |
| C | Rare duplicates, early epics | Replace commons, not endgame |
| D | Starter commons | Placeholder until first upgrades |
Placement Synergy
S-tier structures underperform in bad layouts. Read layout tips and rarity guide before scrapping B-tier pieces that fit synergy slots.
Crafted Structures
Boss Relic crafts may create S-tier equivalents without Rolling — see crafting page.
Frequently Asked Questions
Should I keep duplicate S-tier structures?
Yes for crafting fodder or dual placement if plot size allows.
Do structures affect boss DPS?
Indirectly via funding turret upgrades.
What structure should I Roll for?
Highest income upgrade over current best — consult tier table.
Are event structures higher tier?
Often A or S during events — check update notes.