 Easy |
 Normal |
 Nightmare |
Event Content
Event Content
This is part of an event! This is part of the Man vs. Steel.
Description
Robot Invasion is six wave mode that uses several Robotic Enemies that attack Towers. The mode is played on Robot Contingency, a Defend the Objective map. However, unlike other modes with defend the objective maps, Enemies do not attack the objective, instead colliding with it and dealing their combined 
and 
as damage. The mode offers several preset loadouts for newer players to use, though more experienced players may use their own loadout at the cost of a smaller gold reward.
A unique mechanic that Robot Invasion uses is the Credits mechanic, where players can spend Credits to upgrade their Towers. 1200 Credits are given to the player at the start of a round, and more can be collected from defeated Enemies.
Level Modifications
These extra cash per damage multipliers are recieved if you are less than or equal to a certain level. If you are level X or below, you gain an additional cash per damage multiplier that corresponds to your level.
| Level | Extra Cash per Damage Multiplier |
|---|---|
| 10 or below | 160% |
| 20 or below | 150% |
| 30 or below | 140% |
| 40 or below | 130% |
| 60 or below | 120% |
| 80 or below | 110% |
Tower Perks
Cost Decrease
- Medic costs 10% less.
Cost Increase
Strategies
- The player should constantly collect credits from Enemies to keep upgrading their tower's stats.
- Bringing Medic is heavily recommended so the player can keep their towers alive. Most Enemies in this mode are able to deal damage.
- Using Shock Trooper is recommended as his chain mechanic allows him to kill multiple enemies at once; he is especially effective after you upgrade his stats, but beware his credit upgrade costs as they are very expensive past the first upgrade except for health.
- Oil Derrick can be effective for an eco boost, as his buffs from the Upgrade Tower Stats ui are significant, and majorly increase the base income.
- Commander and EDJ are heavily not recommended to be used due to being insanely overpriced, and that credits can be used to buff tower stats.
- ALWAYS use Medic and makes use you have enough of them.
- Top path Barracks specifically 4-X can be effective early game if you invest your credits on unit range and damage.
- Juggernaut can output a good amount of dps with its top path while also ignoring bullet resistance and having a good amount of range that can be usefull.
- Snipers can be strategically be placed down behind the helicopter shielding them from potential damage.
- Operator and Missile Trooper aren't very effective in this gamemode. Tho you will probably need some for flying detection Later on (X-3 Operator or 5-X Missile Trooper
- ALWAYS use Medic and makes use you have enough of them.
- Use Shock Trooper as your main dps troop as he is very good in this event. Make sure to invest your credits into his range, attack and cooldown for his maximum potential.
- Have 1 Bottom Path Mobster for potential death of your towers to get the Death Cashback.
- Top path Barracks specifically 4-X can be effective early game if you invest your credits on unit range and damage.
- Use Armored Factory and Ghost ask sub-dps after you get your other towers maxed out.
- ALWAYS use Medic and makes use you have enough of them.
- Juggernaut can output a good amount of dps with its top path while also ignoring bullet resistance and having a good amount of range that can be usefull.
- Top path Barracks specifically 4-X can be effective early game if you invest your credits on unit range and damage.
- Artillery can be effectively used at the back of the map with its big range.
- John is a bit too weak to be able to help in this mode so it's recommended to ignore it.
- Railgunner has some potential but there are enemies with heavy laser resistance that pass through him easily making him underwhelming. Tho you will need some top paths later of to counter the flying enemies.
- Don't pick this loadout.
Towers Presets
Assault Loadout
Support Loadout
Heavy Weapons Loadout
VIP Only: Special Forces
Enemies
Note: A debut wave of "N/A" means the enemy does not appear naturally, instead being spawned by a previous one.
Wave 1
Wave 1
Wave 1
Wave 1
Wave 1
Wave 1
Wave 1
Wave 2
Wave 2
Wave 2
Wave 2
Wave 3
Wave 3
Wave 3
Wave 3
Wave 4
Wave 4
Wave 4
Wave 4
Wave 4
Wave 4
Wave 5
Wave 5
Wave 5
Wave 6
Wave 6
Wave 6
Wave 6
Wave 6
Wave Structure
The waves follow these timings:
| Wave | 0 |
1 |
2-5 |
6 |
|---|---|---|---|---|
| Timer | 00:30 |
inf |
11:40 |
00:00 |
Notes:
⠀⠀●⠀Bolded names indicate an enemy's debut.
⠀⠀●⠀Shield boosts are based off of base health.
| Wave | Layout | Advisor Dialogue | |
|---|---|---|---|
| 1 | ●⠀70× Ranger Bot 1 ●⠀25× Ranger Bot 2 ●⠀4× Target Bot ●⠀2× Missile Bot ●⠀2× Missile Bot ●⠀3× Missile Bot ●⠀4× TB Scout Bot ●⠀4× Flame Bot ●⠀20× Target Bot ●⠀10× Missile Bot ●⠀13× TB Scout Bot ●⠀3× Flame Bot ●⠀3× Juggernaut Bot |
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"Commander! Forge's Forces are turning against us! Quickly upgrade your towers through the upgrade shop! Invest wisely and keep an eye on it." |
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"We also need multiple medics, be sure to deploy plenty of medics to keep your towers in good shape! Without them, we will surely lose." | ||
| 2 | ●⠀18× Operator Bot ●⠀6× Juggernaut Bot ●⠀30× TB Scout Bot ●⠀40× Target Bot ●⠀36× Ranger Bot 2 ●⠀15× Missile Bot ●⠀4× Juggernaut Bot ●⠀7× Flame Bot ●⠀20× TB Scout Bot ●⠀1× DJ Bot ●⠀30× Ranger Bot 1 ●⠀6× Juggernaut Bot ●⠀9× Missile Bot ●⠀1× DJ Bot ●⠀6× Juggernaut Bot ●⠀2× Medi Bot ●⠀20× TB Scout Bot ( 100%, 50%)●⠀15× Missile Bot ●⠀5× Medi Bot ●⠀1× Giant Grenadier Bot ●⠀1× Giant Grenadier Bot ●⠀32× Target Bot ( 120%,10%)●⠀1× Giant Grenadier Bot ●⠀3× Medi Bot ●⠀60× TB Scout Bot ( 10%)●⠀18× Operator Bot |
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"Those robots look exactly like our troops. I don't know why Mr. Forge would turn against us, but we have to assume he is hostile!" |
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"Don't forget about that upgrade shop Commander. It's important to keep upgrading stats like damage, range and sometimes even health!" | ||
| 3 | ●⠀3× Giant Laser Bot ●⠀2× Giant Grenadier Bot ●⠀25× Operator Bot ●⠀4× Medi Bot ●⠀18× Stealth Sniper Bot ●⠀10× Juggernaut Bot ●⠀3× Giant Grenadier Bot ●⠀35× Missile Bot ( 125%,25%)●⠀2× Giant Grenadier Bot ●⠀3× Medi Bot ●⠀8× Sgrenadier Bot ●⠀35× Missile Bot ( 125%,25%)●⠀30× Juggernaut Bot ●⠀3× DJ Bot ●⠀17× Medi Bot ●⠀15× TB Scout Bot ●⠀50× Ranger Bot 1 ( 125%,25%)●⠀5× Giant Ranger Bot ●⠀6× Medi Bot ( 40%)●⠀3× Giant Grenadier Bot ●⠀10× Missile Bot ( 125%,70%)●⠀5× Flame Bot |
|
"They're sending in giant versions of our troops?! Invest heavily in juggernauts, we need as many as possible supported by multiple medics!" |
| 4 | ●⠀600× Scout Bot ●⠀10× DJ Bot ●⠀30× Railtrooper Bot ●⠀1× Giant Ranger Bot ●⠀20× Railtrooper Bot ●⠀36× Scout Bot ●⠀1× Giant Railgunner Bot ●⠀1× Giant Railgunner Bot ●⠀4× Giant Ranger Bot ●⠀5× Medi Bot ●⠀20× Juggernaut Bot ( 100%)●⠀4× Giant Grenadier Bot ●⠀4× Giant Shotgunner Bot ●⠀50× Scout Bot ●⠀2× Commander Bot ●⠀3× Giant Ranger Bot ●⠀2× Giant Shotgunner Bot ●⠀5× DJ Bot ●⠀50× Operator Bot ( 50%)●⠀5× Medi Bot ●⠀1× Giant Railgunner Bot ●⠀275× Scout Bot ●⠀4× Jet Bot 1 |
|
"It's a rush! Scout bots detected! We need some form of splash damage to take out the swarm! Slammer, Grenadier, anything! Get rid of them!" |
| 5 | ●⠀4× Giant Laser Bot ●⠀7× Giant Shotgunner Bot ●⠀6× Commander Bot ●⠀7× Giant Ranger Bot ●⠀3× Medi Bot ●⠀5× Giant Grenadier Bot ●⠀72× Laser Bot ●⠀3× Giant Railgunner Bot ●⠀20× Railtrooper Bot ●⠀20× Sgrenadier Bot ●⠀72× Juggernaut Bot ( 100%)●⠀10× DJ Bot ●⠀1× Giant Juggernaut Bot ●⠀1× Giant Medi Bot |
|
"Still using the upgrade shop? Good. You made it this far because of it, so keep investing. There's a short breather between each wave. Use it wisely." |
| 6 | ●⠀20× Golden Ranger Bot ●⠀20× Jet Bot 1 ●⠀20× Golden Botster ●⠀75× Missile Bot ( 200%,150%)●⠀10× Giant Ranger Bot ( 15%)●⠀5× Giant Laser Bot ●⠀3× Giant Medi Bot ●⠀4× Giant Shotgunner Bot ( 15%)●⠀1× Giant Juggernaut Bot ●⠀1× Giant Juggernaut Bot ●⠀1× Giant Kritz Bot ●⠀1× Giant MRL Bot ●⠀50× Flame Bot ( 300%,200%)●⠀2× Giant Flame Bot |
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"This is the last wave! Defend the helicopter at all costs! We need to transport our trapped scientists! Good luck, Commander!" |
Wave Credit Drops
(The amount of credits gained from collecting a credit drop)
- Wave 1: 21 Credits
- Wave 2: 10 Credits
- Wave 3: 13 Credits
- Wave 4: 4 Credits
- Wave 5: 52 Credits
- Wave 6: 30 Credits
Music
| Source | Title | Audio |
|---|---|---|
| Ambience
|
Disposable Machines - Original Soundtrack of Tower Defense X - TDX OST | |
| There They Go Again! - Original Soundtrack of Tower Defense X - TDX OST | ||
| Critical Clank - Original Soundtrack of Tower Defense X - TDX OST | ||
| March of Steel - Original Soundtrack of Tower Defense X - TDX OST | ||
| Phear - Original Soundtrack of Tower Defense X - TDX OST | ||
| Philth - Original Soundtrack of Tower Defense X - TDX OST | ||
| Rubble Without a Core - Original Soundtrack of Tower Defense X - TDX OST | ||
| Scrap - Original Soundtrack of Tower Defense X - TDX OST | ||
| We Need to De770-1 - Original Soundtrack of Tower Defense X - TDX OST | ||
| They Can't Solo - Original Soundtrack of Tower Defense X - TDX OST | ||
| Uber Danger - Original Soundtrack of Tower Defense X - TDX OST | ||
| For a Better Future - Original Soundtrack of Tower Defense X - TDX OST | ||
| Bipolar Junk - Original Soundtrack of Tower Defense X - TDX OST | ||
| Robotz - Original Soundtrack of Tower Defense X - TDX OST |
Badges
OBTAINABLE
Obtained by Win Robot Invasion Easy or Robot Invasion Normal during the Man vs. Steel
Obtainable upon victory in XMAS 25 Normal Part 1.
Trivia
- Robot Invasion Normal is the first game mode alongside Robot Invasion Nightmare to lack a final boss.
- This also means it is also the first event gamemode to lack a final boss.
Update History
- 25 December 2025
- Robot Invasion has been released as a part of the Man vs. Steel.
- Later the same day
- The credit amount earned has increased.
- 27 December 2025
- 21 February 2026
Trivia
- Robot Invasion Nightmare, Robot Invasion, and Robot Invasion Easy are the only gamemodes in TDX to not have any bosses.
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