Bomb Farm Wiki Glossary: Terms, Stats & Mechanics A–Z

If you searched for 'bombfarm wiki', this is the quick-reference page: Bomb Farm is a free-to-play idle RPG from developer and publisher Stream On (Steam AppID 4892010, released 28 August 2026, Windows only) in which a bomber squadron of heroes automatically places bombs to shatter minerals for gold, experience and chests. This glossary lists every major term, stat and mechanic from A to Z with the core numbers behind it: 600 stages across 5 difficulties, 19×16 rooms, up to 9 heroes on the field, a 132-node skill tree, 20 abilities that level from 1 to 10, forging from +0 to +15 (never failing up to +8), 6 rarity tiers, 9 gem types and a Steam Market unlock reported at stage 5-19 Normal. Entries are drawn from the Steam store page, the Steam community forums, SteamDB and the bombfarm.net wiki; where a number rests on a single source, the entry says so.

Bomb Farm at a Glance: Core Numbers Behind the Wiki

Bomb Farm is built in the Godot Engine (per SteamDB) and ships as a single-player idle RPG with Steam Achievements, In-App Purchases, Steam Cloud saves and Family Sharing. It supports keyboard-only or mouse-only play, saving at any time and no timed inputs. The store lists it under Casual, Indie, Simulation, Strategy and Free To Play, and SteamDB tags it Casual, Incremental, Idler, Auto Battler, Strategy and Pixel Graphics. Four languages are supported: English, Brazilian Portuguese, Spanish (Spain) and Simplified Chinese. At the SteamDB snapshot it held 125 reviews at 82.21% positive with an all-time peak of 1,640 concurrent players.

The core loop is the same on every stage: your squad shatters minerals, minerals pay out gold, experience and chests, you open chests to equip and forge gear, you spend gold on the skill tree, and you push into deeper stages. According to the bombfarm.net wiki the game is finite: 600 stages spread over 5 difficulty tiers. The table below collects the headline numbers that the rest of this glossary refers back to. Numbers marked 'wiki' come only from bombfarm.net; numbers marked 'Steam' come from the store page; 'community' means Steam discussion threads.

• Verified by two or more sources: developer Stream On, free to play, idle RPG loop, forge +N system, skill tree, 20 abilities, fusion, star rank, Steam Market trading, multiple difficulties including Normal, chapter-stage numbering, paid pass and crystal currency, rarity tiers.
• Single-source (wiki only): 600 stages, 5 difficulties, 19×16 rooms, 9 field slots, 132 skill-tree nodes, +8 forge safety, 240 equipment pieces, 6 rarity tiers, 9 gems, 5 recovery houses, 5 leaderboards, no offline income.
• Single-source (Steam store only): four hero roles, abilities Lv1 to Lv10, three teams, sealed drops, +15 forge cap.
• Single-source (community thread titles only): Market unlock at 5-19 Normal, VIP Pass, Friend Code, automatic map advance toggle.

A to E: Abilities, Cage, Chest, Combat Power, Crystal, Energy

The first block of the glossary covers how heroes are defined and what drops from the ground. Heroes in Bomb Farm are fully automated: you do not steer them, they pick their own positions and place their own bombs. They have no health bar and cannot die; instead they spend energy while working and retire to a house when it runs out. This is why almost every early-game decision comes down to which heroes are on the field and what gear they wear, rather than moment-to-moment control.

Drops follow strict ownership rules that matter for the terms below. Gold and chests belong to the account and are awarded once per mineral no matter who breaks it. Experience belongs to the hero who owns the bomb that shattered the mineral. Keep that split in mind when reading the entries for Chest, Combat Power and Energy.

• Abilities: A pool of 20 hero abilities, each upgradeable from level 1 to level 10 (Steam store). A hero's rarity decides how many of the 20 it can master (wiki). Ability names are not documented in verified sources.
• Attacker / Support / Collector / Specialist: The four hero roles named on the Steam store page. Each hero comes with unique attributes and abilities; role-specific effects are not documented in verified sources.
• Automatic Map Advance: A toggle that moves the squad to the next stage on its own. Community threads show players who switched it off asking how to turn it back on (community, single source).
• Backpack (Inventory): Capacity is limited, and once it is full new drops are lost (wiki). The exact loss rule was not captured.
• Boss Mineral: A mineral that occupies a 2×2 block of tiles instead of a single tile (wiki).
• Cage: The only source of new heroes in the game. Cages run on a timer (wiki).
• Chest: Drops while shattering minerals and never expires. A chest can contain items, heroes, gems, time parts or keys (wiki). Chests are credited to the account, once per mineral.
• Combat Power: The single stat the wiki recommends for deciding whether a piece of gear is an upgrade. It is also the ranking metric for the 5 server-wide leaderboards (wiki).
• Crystal: The premium paid currency spent in the shop (wiki). Steam lists the game with In-App Purchases.
• Difficulty: 5 difficulty tiers exist, and one of them is called Normal (wiki, with community threads citing '5-19 Normal').
• Energy: The resource heroes burn while working. Heroes have no HP and cannot die; when energy hits zero the hero returns to a house to rest and comes back once it is full (wiki).

F to L: Forge, Fusion, Gems, Golden Rule, Houses, Keys, Luck

This block holds the progression systems: forging, fusion and gems. The Steam store page confirms the forge range of +0 to +15, and the bombfarm.net wiki adds the one number every new player should know: forging from +0 to +8 never fails. The wiki's recommended opening is to buy the first few levels of the skill tree and then forge your gear to +8 before anything else. What happens on a failed forge above +8, and the odds of failure, are not documented in any verified source.

The same block contains the rule that separates Bomb Farm from most idle games. The wiki's 'golden rule' is that only shattering minerals produces income. Standing idle with nothing being broken produces nothing, and closing the game produces nothing at all, so there is no offline progress. If you read elsewhere that the squad keeps collecting while you are away, that claim contradicts the wiki and should be treated as wrong.

• Forge (+N): Equipment is upgraded step by step from +0 to +15 (Steam store). Forging never fails up to +8 (wiki). Failure odds and consequences from +9 to +15 are unverified.
• Friend Code / Free Code: Community threads reference codes that can be redeemed for free supplies (community, single source).
• Fusion: Duplicate items or duplicate heroes can be fused to produce a rarer version (Steam store and wiki). The number of duplicates required is not documented.
• Gem: One of 9 gem types. Gems drop from chests and are consumed in the Gem Ritual (wiki). Individual gem names are not documented.
• Gem Ritual: The ceremony that raises a hero's star rank, which in turn multiplies that hero's own attributes (wiki).
• Golden Rule: Only shattered minerals pay out. No shattering means no gold, experience or drops, and a closed game earns nothing (wiki).
• Hero: An auto-controlled unit that positions itself and places bombs. The battlefield starts with 1 slot and expands to a maximum of 9 heroes on the field, with extra slots unlocked in the skill tree (wiki).
• House (Recovery House): One of 5 buildings where drained heroes rest. Heroes wait in a recovery queue until their energy is full (wiki).
• Key: Required to enter an X-10 gate stage; each entry costs 1 key of the current difficulty. Keys drop only on stages that are not X-10, so you cannot pass a gate without farming keys beforehand (wiki).
• Leaderboard: 5 server-wide rankings sorted by Combat Power (wiki).
• Luck: Raises the drop chance of chests, keys, gems and time parts. It does not affect gold income (wiki).

M to R: Market, Minerals, Passes, Rarity, Replaying Old Maps, Rooms

Trading is the feature that most distinguishes Bomb Farm from a typical idle game. Both the Steam store page and SteamDB confirm that items and heroes can be traded with other players on the Steam Market, and the community forum has a dedicated Trading sub-board alongside General Discussions and Events & Announcements. Three independent community threads (by YITAN, SterpsilS and EcchiNeko) report that the in-game Market unlock condition was changed to clearing stage 5-19 on Normal difficulty. That condition comes only from thread titles, so treat it as the current community understanding rather than an official statement.

The paid layer is less clearly documented. The wiki describes a 30-day pass subscription and a crystal currency for the shop, while community threads refer to a VIP Pass and a 'VIP Pass Market Lock Bug' after an update that stopped some VIP users from selling. Whether the 30-day pass and the VIP Pass are the same product is unconfirmed. The forum also contains VIP refund disputes and threads questioning the game's monetisation, which is worth knowing before spending.

• Market (Steam Market): Items and heroes can be listed and traded with other players on the Steam Community Market (Steam store, SteamDB). Community threads report the unlock requirement is now clearing stage 5-19 on Normal (community, single source).
• Mineral: Everything on the field is a mineral, including rocks, ores, bushes and wooden crates. Rarer minerals have more health and pay out more (wiki).
• Newbie Pack: A starter bundle for new accounts. The wiki also notes a reward for every stage cleared (wiki).
• Pass (30-Day Pass / VIP Pass): The wiki lists a 30-day pass subscription; community threads refer to a VIP Pass. Whether they are the same product is unconfirmed.
• Rarity: 6 tiers from Common to Mythic (wiki; tier names translated from the Chinese wiki, and the four middle tier names are not documented). Rarity sets how many attribute lines an item has and how many abilities a hero can learn (Steam store and wiki).
• Replaying Old Maps: No penalty. Gold, experience and drops on a revisited stage match that stage's normal values, so farming an earlier stage for keys or chests is legitimate (wiki).
• Room: Each room is a 19×16 tile grid. As soon as a room is cleared, a new one spawns immediately (wiki).
• Recovery Queue: The waiting line at the 5 houses where heroes with zero energy wait to be refilled (wiki).

S to Z: Sealed Drops, Skill Tree, Stars, Teams, Time Parts, X-10 Gates

The last block covers the skill tree and the stage structure. The Steam store describes the tree as a huge set of upgrades and unlocks for your entire team, inspired by the style of Path of Exile, with dozens of nodes; the wiki gives the precise count of 132 global nodes purchased with gold. Path of Exile is indeed known for its very large passive tree, so the comparison is apt. The tree is also where you unlock the extra field slots that take your squad from 1 hero to 9.

Stage numbering uses a chapter-stage format such as 5-19. The wiki states that every X-10 stage is a timed gate that costs 1 key of that difficulty to enter. Because community threads reference stage 5-19, chapters clearly run past 10 stages, and the exact way 600 stages divide across chapters and 5 difficulties is not documented. Star rank also needs care: the Steam store says you collect stars by fusing duplicate gear, while the wiki says hero star rank rises through the Gem Ritual and multiplies hero attributes. These are described for different targets (gear versus heroes), so the glossary lists both.

• Sealed Drops: Drops arrive sealed and must be revealed before you know what is inside (Steam store).
• Skill Tree (Talent Tree): A global upgrade tree for the whole team, Path of Exile-inspired (Steam store), with 132 nodes bought with gold (wiki). Buying its first few levels is part of the wiki's recommended opening.
• Stage Numbering: Chapter-stage format, for example 5-19. 600 stages in total across 5 difficulties (wiki).
• Star Rank (★): On gear, stars are collected by fusing duplicates (Steam store). On heroes, star rank is raised by the Gem Ritual and multiplies the hero's own attributes (wiki).
• Teams: Three teams you can switch between so the mine keeps running while one squad recovers energy (Steam store).
• Time Parts: A drop category found in chests; its drop rate is boosted by Luck (wiki). What time parts are spent on is not documented in verified sources.
• Trading: The Steam community sub-forum for player-to-player deals, tied to the Steam Market feature (community).
• X-10 Gate (Stage Gate): Every stage numbered X-10 is timed and requires 1 key of the current difficulty to enter. Keys only drop on non-X-10 stages (wiki).
• XP (Experience): Awarded to the hero who owns the bomb that broke the mineral, not to the account (wiki).

How the Stats Fit Together: Ownership, Luck and the Recommended Opening

Reading the glossary as a system: gold and chests are account-wide and land once per mineral, so squad size and mineral rarity are what raise gold income. Experience is per hero and goes to whoever placed the killing bomb, so the hero you want to level must actually be breaking minerals. Luck raises the chance of chests, keys, gems and time parts but leaves gold untouched, which makes it a drop stat rather than an income stat. Combat Power is the wiki's single yardstick for comparing gear and the metric behind all 5 leaderboards.

The wiki's recommended opening is short: buy the first few levels of the skill tree, then forge gear to +8, because +8 is guaranteed to succeed. Keep the game open, since nothing is produced while it is closed, and rotate your three teams so that heroes resting in the 5 houses do not stall the mine. Farm keys on regular stages before each X-10 gate, and remember that replaying an earlier stage pays exactly what that stage always paid, so backtracking for keys or chests costs nothing but time.

• Account-owned: gold and chests, once per mineral.
• Hero-owned: experience, credited to the bomb's owner.
• Luck affects: chests, keys, gems, time parts. Luck does not affect: gold.
• Gear decision: compare Combat Power before and after.
• Opening order (wiki): first skill-tree levels, then forge to +8, then push stages while farming keys for the next X-10 gate.

Unconfirmed Terms and Known Gaps in the Bomb Farm Wiki

Several entries above are translated from the Chinese-language bombfarm.net wiki, so the in-game English labels for mineral, cage, crystal, time parts and stage gate may differ from the wording used here. Only the terms that appear on the Steam store page (Attacker, Support, Collector, Specialist, sealed drops, +0 to +15, stars, three teams, 20 abilities) have verified English spelling. Hero attribute names beyond attack, speed and luck were not captured, nor were the names of the 9 gems, the 20 abilities, the four middle rarity tiers or the slot categories of the 240 equipment pieces.

Some mechanics remain open questions. The failure rate and penalty for forging from +9 to +15, the number of duplicates needed for a fusion, energy values, crystal pricing and the official wording of the Market unlock are all undocumented. The 30-day pass and the VIP Pass may or may not be the same product. Finally, any guide claiming that the bomber squad keeps collecting while the game is closed contradicts the wiki's no-offline-income rule and should not be relied on.

• Unverified English names: mineral, cage, crystal, time parts, stage gate, gem ritual, recovery house.
• Missing lists: 9 gem names, 20 ability names, middle 4 rarity tiers, 240 equipment categories, full hero attribute list.
• Missing numbers: forge failure odds above +8, fusion duplicate count, energy per hero, crystal prices.
• Open conflicts: 30-day pass versus VIP Pass; how 600 stages split into chapters when chapters exceed 10 stages.