Into the Backrooms TD Secret & Rare Units

Secret Units — Mega Rare Towers

This wiki covers Into the Backrooms TD (Roblox Game ID 123446017566246) by the Backrooms Tower Defense group — not Backroom Tower Defense (10498602208), not [TRADE] Backrooms Tower Defense (17480843538), and not The House TD. Always verify you are in the correct experience before redeeming Codes or Trading.

Secret units are the rarest tier in Into the Backrooms TD — mega-rare towers with abilities that redefine late-game strategy. On Game ID 123446017566246, tracked Secrets include Frowner (Secret DPS), Gaming Master (Craft Reward), and Mega Rare Tower (Summon Exclusive).

Pull rates from crates are extremely low. Lucky Crates and Gem Crates improve odds but never guarantee Secrets. Some Secrets also unlock through hidden level interactions and hard-mode encounter chances.

Obtain Methods

Crate summoning: Normal, Lucky, Gem, and SCP crates in the lobby roll unit pools. Bulk openings improve statistical odds — see Crate Opening Strategy.

Craft rewards: Gaming Master (500 trade value) comes from the craft system rather than standard crate pools. Invest craft materials from level drops and events.

Hidden discovery: Community reports suggest Secret encounters from hard level clears, Level Fun exploration, almond water interactions, and Level 6 treasure — mechanics may change with updates.

Trading: Buy Secrets from other players using value knowledge and the Trade Calculator when crate luck fails.

Rare Tier Highlights

Rare units Hound (Fast DPS) and Skin Stealer (Melee) punch above their rarity when fully upgraded in Class 2. They trade at 35–40 value — liquid mid-market assets for building toward Legendaries.

Do not overlook Epics while chasing Secrets. Smiler and Bacteria enable the debuff/DoT comps that make Secret DPS units like Frowner reach full damage potential against boss HP pools.

Read How to Get Rare Towers for summoning math and Summon Guide for crate type comparisons.

Individual Secret Unit Profiles

Frowner (450 trade value, Secret DPS) leads burst damage comps against Class 4 boss HP pools. Ability uptime and single-target scaling make Frowner the most traded Secret after Mega Rare Tower — scammers target new Frowner owners aggressively; use Trade Calculator before any exchange on Game ID 123446017566246.

Gaming Master (500 trade value, Craft Reward) requires craft system investment rather than standard crate pools. Craft materials drop from level rewards and events — plan long-term farming before expecting Gaming Master in your roster. Trading value stays premium due to supply caps limiting market flood.

Mega Rare Tower (600 trade value, Summon Exclusive) tops both PvE and Trading rankings when obtained. Summon exclusive status means Normal Crates cannot produce it through standard pools — Lucky and Gem Crates during boosted rate windows offer the primary legitimate obtain path besides Trading from whale accounts.

Rare Tier as Trading Stepping Stones

Hound (35 trade value, Fast DPS) and Skin Stealer (40 trade value, Melee) punch above Rare rarity when maxed for Class 2 content. Both serve as liquid mid-market Trading assets — new traders exchange Rare duplicates toward Epic tier (Smiler 75, Bacteria 85) through fair incremental deals on How to Trade.

Do not skip Epic investment while chasing Secrets. Smiler debuff enables Frowner burst potential — a Secret carry without debuff support underperforms maxed Epic teams in boss wave testing. Build debuff foundation before Secret chase sessions from crate strategy.

Community-documented hidden discovery on Level Fun, almond water interactions, and Level 6 treasure may grant Secret encounters — mechanics change with updates. Verify in-game after reading fan resources on Community Resources; treat discovery methods as experimental until developer confirmation.