Flame Bot

Last verified 2026-07-29 · 3 data tables

Flame Bot is one of the bots you can unlock in The Tower: Idle Tower Defense. When it activates, it burns enemies in an area around the bot, dealing a tick of burn damage every second and weakening the damage those enemies deal back to you.

Description

Flame Bot damages enemies in an area around the bot. Anything it hits is set on fire, taking burn damage over time while the effect lasts.

Unlocking/Upgrading

Like all bots, Flame Bot is bought and upgraded through the Event Shop menu. The medals needed to unlock it depend on how many other bots you have already purchased. Each of its four upgrades starts at a base cost of 100 medals, rising by 40 medals per level. Flame Bot deals burn damage, applying one tick of damage equal to its bot damage each second.

Damage Reduction

Burned enemies deal less damage to you. This upgrade starts at 20% damage reduction and has 25 levels, adding 3% per level.

Cooldown

Cooldown controls the time between Flame Bot's activations. It begins at 75 seconds and has 15 levels, each shaving off 3 seconds.

Damage

This upgrade raises the damage Flame Bot deals when it activates. The calculation factors in your crit and super crit chance and multiplier, following the same damage formula used for Ultimate Weapons. The multiplier starts at x50 tower damage and has 30 levels, increasing by +8x per level.

Range

Range sets how far the bot's effect reaches while active, and it is amplified by your tower range. It starts at 30m and has 15 levels, adding 4m per level.

Cost

The cost table below lists the medal cost for each upgrade level of Flame Bot's four upgrades.

LevelCostDamage ReductionCooldownDamageRange
110023%7258x34m
214026%6966x38m
318029%6674x42m
422032%6382x46m
526035%6090x50m
630038%5798x54m
734041%54106x58m
838044%51114x62m
942047%48122x66m
1046050%45130x70m

Labs — Flame Bot Cooldown

This lab is unlocked through Milestones at tier 5 wave 60. Each level reduces Flame Bot's cooldown by 1 second, and with 25 levels you can cut a total of 25 seconds off the cooldown. The lab table below shows the cost per level.

LevelTimeCostValue
11d 14h 53m30.00M-1
21d 23h 14m60.05M-2
32d 7h 47m91.60M-3
42d 16h 54m132.15M-4
53d 3h 4m201.20M-5
63d 14h 56m336.25M-6
74d 5h 11m598.80M-7
84d 22h 39m1.08B-8
95d 20h 13m1.91B-9
106d 22h 51m3.25B-10

Labs — Flame Bot - Burn Stack

This lab is unlocked through Milestones at tier 10 wave 50. It lets repeated Flame Bot hits on the same enemy stack the burn effect, making the burn tick faster. At 2 stacks the enemy takes damage every 0.5 seconds, or 2 ticks per second. The lab has 5 levels, each adding 1 stack per hit, and burn stacks cap at 10. At lab level 1 it takes 10 hits to reach the cap, while at max lab level only 2 hits are needed. The lab table below shows the cost per level.

LevelTimeCostValue
145d 15h 0m43.00T1
252d 11h 15m64.50T2
360d 8h 8m96.75T3
469d 9h 21m145.13T4
579d 19h 9m217.69T5

Related pages

Written for Tower Hub. Numbers and mechanics were cross-checked against our decoded save data and the community's Fandom wiki (community page last edited 2026-06-30). Something out of date? Tell us in the Discord.

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