Rune Dice Bomb Build Guide: All 3 New Relics (Patch 1.2.2)

A real Rune Dice bomb build wasn't possible until this week. Bomb Dice relics have always been good for a reliable damage add-on since the game's May 2026 launch, but not something you'd plan a whole run around. Patch 1.2.2, which Smart Raven Studio shipped on August 12, 2026, changes that math directly: three new relics stack specifically on top of Bomb Dice, and a board fix removes the main reason chaining explosions used to backfire.

TL;DR: Patch 1.2.2 added three relics, Blasting Powder, Booster Charge, and Chain Detonator, that turn Bomb Dice into a coherent build instead of a generic pickup. The patch also added Spring Coil III (the game's first tier III relic), a Relief Rune, and a new Paladin relic called Retribution Censer. A board fix stops dice from being lost off the bottom edge, which was previously breaking long bomb chains. The game still has 8 classes; nothing here adds a ninth.

Rune Dice bomb build: quick answer

Yes, Rune Dice has a real bomb build as of patch 1.2.2. Pick up Blasting Powder, Booster Charge, and Chain Detonator whenever they appear in a shop, and treat them as a matched set rather than isolated relics. Together they turn a single well-aimed Bomb Die throw into a multi-target chain reaction that reaches further, hits harder, and can now set off every other Bomb Die on the board.

Key takeaways

• Patch 1.2.2 (August 12, 2026) added three relics built specifically for Bomb Dice: Blasting Powder, Booster Charge, and Chain Detonator
• All three also affect an existing ability called Big Bada Boom, per the official patch notes
• Spring Coil III is the first tier III relic in the game, added alongside a buffed Spring Coil II
• Relief Rune (removes a random negative effect) and Retribution Censer, a new Paladin relic, also shipped in this patch
• The board's bottom edge is now solid, so bomb chains no longer knock dice off the field and out of the run
• Rune Dice still has 8 classes; this patch didn't add a new one

Patch 1.2.2 overview: what actually changed

Smart Raven Studio posted the patch 1.2.2 notes to Steam on August 12, 2026, under the header "Blow Things Up!" The section title is a fair summary of the update's focus: most of the new content exists to make Bomb Dice work as an intentional build rather than an incidental pickup.

Beyond the three headline relics, the patch also shipped two relic tiers (Spring Coil II and Spring Coil III), a new utility rune (Relief Rune), and a class-specific relic for Paladin (Retribution Censer). A separate balance pass made Classic Hardcore rerolls cheaper and adjusted reward-reroll costs across all three acts. The patch also fixed a board bug that was quietly undermining bomb-heavy runs: dice knocked toward the bottom edge by an explosion could fall off the board and out of your pool entirely, instead of bouncing back like every other edge. That's now fixed.

None of this touched the class roster. Rune Dice still has 8 classes: Rogue, Mage, Warrior, Paladin, Druid, Bard, Necromancer, and Archer. Retribution Censer is a new relic for the existing Paladin, not a new hero.

The three new bomb relics, explained

Here's what each one does, straight from the patch notes. Nothing added, nothing assumed.

Blasting Powder gives explosions from Bomb Dice 50% greater range and force. In practice, this means a Bomb Die that used to catch two or three nearby dice in its blast radius now reaches further across the board, catching dice that would previously have landed just outside the explosion.

Booster Charge doubles the damage Bomb Dice deal. This is the simplest of the three and the most directly impactful on raw output: a Bomb Die that used to trade evenly with a same-tier direct-hit relic now clears that bar on its own.

Chain Detonator is the relic that turns bomb play into an actual system instead of three separate damage boosts. When an explosion hits another Bomb Die already on the board, that second die detonates too, and its explosion can chain into a third, and so on. The patch notes describe this plainly: chain reactions across the whole board.

The patch notes add one more detail worth knowing before you build around this: all three relics also affect an existing ability called Big Bada Boom. The notes don't explain exactly what Big Bada Boom does beyond confirming it benefits from the same range, damage, and chain-detonation buffs, so treat its specific mechanics as unconfirmed until you've checked its current in-game tooltip. What is confirmed is that it's one more reason these three relics compound rather than sit side by side doing separate things.

GODEEPER: These three aren't the only relics worth prioritizing on a Rune Dice run. Rune Dice Relics Guide: Best Builds and Relic Priority 2026 →

New Spring Coil tiers, Relief Rune, and the Paladin's Retribution Censer

The bomb trio is the headline, but three other additions in 1.2.2 are worth knowing about even outside a bomb-specific build.

Spring Coil II makes merged dice jump even higher and pulls them toward their targets more strongly than the base relic. Spring Coil III goes further still: maximum jump height and maximum pull. It's specifically called out in the patch notes as the first tier III relic in the game, which means Rune Dice's relic upgrade ladder now goes one rung higher than it did before August 12.

Relief Rune fully removes one random negative effect from your hero when used. It answers stacked debuffs directly, and it slots into the same rune-management decisions covered in the Rune Dice physics guide, since runes are activated manually mid-combat rather than passively like shop relics.

Retribution Censer is new, and it's Paladin-specific: when your hero gains fire, the same amount of fire is applied to a random enemy. Enemies that try to burn the Paladin down get punished for it, which changes the math on whether tanking fire and healing through it is still the right call.

All three of these, along with the bomb trio, unlock through normal play, the same way every other relic and rune in the game does. There's no separate unlock condition tied to this patch specifically.

Step-by-step: building a full bomb run

Step 1: Pick a class that can survive the early game while you collect the set

The bomb build doesn't come together on turn one. You need at least two of the three new relics before the chain-detonation math starts compounding, and that means surviving a handful of early shops on whatever relics you can find. Warrior's blocking dice and Paladin's heal-on-trigger kit both buy you that runway better than a fragile class like Rogue does. If you already know the class you're picking from the Rune Dice class guide, the bomb build layers on top of whatever that class already does; it doesn't replace class identity.

Step 2: Prioritize Blasting Powder, Booster Charge, and Chain Detonator on sight

Once one of the three shows up in a shop, buy it even if it means skipping a relic that fits your class better. The value of this build comes from having two or three of them together, not from any single one in isolation. Chain Detonator specifically is close to useless without at least a handful of Bomb Dice already in your pool to chain into, so don't take it as your very first pickup if your pool is still mostly base dice.

Step 3: Build your dice pool around Bomb Dice, not just your relics

Relics only help if you have Bomb Dice for them to trigger on. Add Bomb Dice at shops whenever the option appears, and treat non-explosive dice the way the site's general relic guide already recommends: dice that don't trigger any relic you're holding are dead draws that dilute your throw. A pool where every die can start or extend a bomb chain is stronger than a bigger pool padded with dice that don't interact with your build.

Step 4: Aim throws to bounce into clusters, not at single targets

The physics system is what makes Chain Detonator worth building around. A Bomb Die thrown to bounce off a wall into a group of enemies (or a cluster of other Bomb Dice already on the board) sets off a chain that a straight-line throw at one target never triggers. This is the same bounce-aiming skill covered in the game's physics mechanics; bomb builds are just the setup where it matters most.

Step 5: Stop worrying about losing dice off the bottom edge

Before 1.2.2, an aggressive chain reaction near the bottom of the board could knock your own dice out of the arena entirely, permanently removing them from your pool mid-run. That's fixed now: the bottom edge bounces dice back like the other three edges do. You can throw and chain more aggressively near the bottom of the board than you could before this patch without worrying about losing dice you'll need later in the fight.

Rogue starts with zero relics and low HP, which is exactly why Step 1 matters: a bomb build needs a class that can survive the early shops before the relic set comes together.

Which classes get the most from a bomb build

Bomb relics were already class-agnostic before this patch, and that's still true: any class benefits from AoE damage that scales with the physics system. Two classes stand out specifically after 1.2.2.

Archer was already the class most associated with bomb-chained clears; this site's own Rune Dice complete guide clocked the fastest optimized Archer runs around 18 minutes, chaining bomb dice reactions through entire rooms in single throws, well before patch 1.2.2 existed. Chain Detonator is a direct upgrade to that exact playstyle: more chains per throw, with less setup needed to get them started.

Paladin has a new reason to lean into fire-adjacent builds thanks to Retribution Censer, and bomb explosions frequently interact with fire-type effects on the board. Paladin's existing heal-on-trigger kit also gives it the survivability to sit through the early shops it takes to assemble the full bomb relic set, which fragile classes like Rogue and Mage struggle to do reliably.

For a full breakdown of where every class currently sits, the Rune Dice tier list covers all 8 classes with pick reasoning that predates this patch but still holds for base class strengths.

Paladin's 59 starting HP and heal-on-trigger kit hold up better than fragile classes while you're still waiting for the bomb relics to show up in shops.

Board and physics fixes that make bomb builds actually work now

Two fixes in 1.2.2 matter specifically for anyone building around explosions, even though neither one is a new relic.

The bottom-edge fix is the bigger of the two. Before this patch, the bottom of the board was the only edge that didn't bounce dice back into play; a die knocked hard enough toward it could disappear off-screen entirely. The patch notes say plainly why this mattered: "with explosions throwing dice around, far too many runs were quietly losing dice off the bottom of the screen." A build built around chained explosions was, structurally, the one most likely to trigger that bug. Fixing it removes a hidden tax that was specifically punishing the exact playstyle this patch is trying to support.

The second fix is smaller but still relevant: chain merges no longer freeze or veer off nearby dice that you'd knocked on purpose. Only dice thrown outward by the merge itself get damped now, so a deliberate bump you're using to set up a bomb chain keeps its trajectory instead of getting caught in unrelated merge physics.

GODEEPER: Chain-based bomb builds live and die on understanding how throws, bounces, and merges actually interact. Rune Dice Physics Dice System: Throws, Merges & Chains →

Tips for playing a Rune Dice bomb build

• Don't take Chain Detonator too early. It needs Bomb Dice already on the board to be worth its shop slot; Blasting Powder or Booster Charge are better first picks if you're still building your pool.
• Watch your own dice, not just enemy clusters. Chain Detonator triggers on any Bomb Die an explosion hits, including your own. That's usually good, but it means a chain can burn through your pool faster than you expect.
• Mid-run shops are more predictable than early ones, the same rule that applies to every relic build in Rune Dice. By the time you've got one or two of the three bomb relics, you know what you're looking for in the next shop.
• Big Bada Boom's exact behavior isn't documented beyond "it benefits too." If you have it, check its current tooltip in-game rather than assuming how it stacks with the new relics.
• Retribution Censer rewards Paladin players who don't avoid fire. If your build is otherwise trying to dodge burn effects, this relic asks you to reconsider that instinct.

Related Reading

• Rune Dice Boss Guide: Beat Bosses and Counter Webbed Dice: Rune Dice boss guide: how to beat floor bosses, counter webbed dice with Shuffle and
• Rune Dice Complete Guide 2026: Classes, Relics, and Builds: the hub for every system in the game, including how relics fit into a full run.
• Rune Dice Class Unlock Guide: How to Get All 8 Classes: Rune Dice class unlock guide covering all 8 classes. Rogue and Mage start unlocked. Each
• Rune Dice Druid Unlock Guide: Blight Druid Boss Strategy: Rune Dice Druid unlocks by defeating the Blight Druid in Hard Mode. Three heroes, four
• Rune Dice Archer Build: Heartseeker and the 40-Combo: the class most associated with bomb-chained clears before this patch.

References

• Rune Dice Patch Notes v1.2.2 on Steam: official patch notes from Smart Raven Studio, posted August 12, 2026
• Rune Dice on Steam: store page, current pricing, and full patch history
• Rune Dice on X/Twitter: official developer account for Smart Raven Studio
• r/RuneDice on Reddit: active community discussion; no patch-1.2.2-specific threads had appeared as of this article's research date, less than 24 hours after release

Frequently Asked Questions

What are the new bomb relics in Rune Dice patch 1.2.2? Blasting Powder (50% more explosion range and force), Booster Charge (double Bomb Dice damage), and Chain Detonator (an explosion sets off any other Bomb Die it hits). All three also affect Big Bada Boom, per the official patch notes.

When did Rune Dice patch 1.2.2 release? August 12, 2026, confirmed via Smart Raven Studio's official Steam announcement. It's the update that introduced the bomb-focused relic trio alongside Spring Coil III, Relief Rune, and the Paladin's Retribution Censer.

What is Big Bada Boom in Rune Dice? An existing bomb-themed relic or ability that predates patch 1.2.2. The patch notes confirm all three new relics buff it but don't spell out its exact effect, so treat that specific mechanic as unconfirmed until you can check its current in-game tooltip.

Does the bomb build work with every Rune Dice class? Bomb relics were already class-agnostic before this patch, and that hasn't changed. Archer was already known for bomb-chained speed clears, and Paladin now has an extra reason to lean in with the fire-reflecting Retribution Censer relic.

What is Spring Coil III in Rune Dice? The first tier III relic added to the game. It gives merged dice maximum jump height and maximum pull toward their targets, on top of what Spring Coil II already does. Both were added in patch 1.2.2.

How many classes does Rune Dice have after patch 1.2.2? Still 8: Rogue, Mage, Warrior, Paladin, Druid, Bard, Necromancer, and Archer. The patch's Paladin-specific relic doesn't add a new class, it's a new relic for an existing one.

Did patch 1.2.2 fix dice getting lost off the board? Yes. The bottom edge of the board is now a solid wall, so dice bounce off it instead of disappearing. The patch notes specifically call out explosions as the cause: bomb chains were throwing dice off the bottom edge before this fix.