Grow Chicken Fighter UFO Invasion Event Guide — How to Beat Every Wave, Best Chickens to Use & All Event Rewards

The aliens picked the WRONG farm. Grow Chicken Fighter’s UFO Invasion event is live — and it’s the most chaotic, rewarding limited-time event the Roblox chicken battler has ever launched. Alien ships are descending on the battlefield, abducting chickens, and dropping high-tier loot for players brave enough to fight back.

The UFO Invasion event challenges players to defend their farm against waves of extraterrestrial enemies using their strongest chickens. With exclusive event rewards, limited-time currencies, and boss fights that demand precise chicken selection — this guide covers everything you need to dominate the invasion and walk away with every piece of alien loot before the event ends.

Time to show these aliens why you don’t mess with Earth’s chickens.

UFO Invasion Event — Overview

Detail	Info
Game	Grow Chicken Fighter
Event	UFO Invasion
Platform	Roblox
Event Type	Limited-Time PvE Wave Defense
Status	🟢 LIVE
Duration	Limited — exact end date TBA (check in-game timer)
Entry Requirement	No minimum level — all players can participate
Event Currency	Alien Shards
Event Shop	Exclusive rewards purchasable with Alien Shards
Boss Fights	Yes — UFO Boss appears at milestone waves
Multiplayer	Solo or co-op

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How the UFO Invasion Works — Core Mechanics

The UFO Invasion is a wave-based PvE event where alien enemies descend from UFOs to attack your farm. Your chickens must defend against increasingly difficult waves, with boss encounters at key milestones.

Mechanic	How It Works
Wave System	Aliens arrive in numbered waves — difficulty escalates each wave
Alien Types	Multiple enemy types with different attack patterns and resistances
UFO Boss	Appears every 5–10 waves — high HP, powerful attacks, drops premium loot
Chicken Deployment	Place your chickens strategically to intercept alien waves
Alien Shards	Earned per wave cleared — event-exclusive currency
Beam Mechanic	UFOs beam down enemies AND can abduct your weakest chickens
Shield Phase	Some waves include shielded aliens requiring specific damage types
Bonus Waves	Random bonus rounds with extra Alien Shard drops

The Abduction Mechanic — Protect Your Weak Chickens!

The most unique feature of the UFO Invasion is the abduction beam. UFOs periodically target your weakest deployed chickens and attempt to beam them up. If a chicken is successfully abducted, you lose it for the remainder of that event run — it’s temporarily removed from your roster.

Abduction Rules	Detail
Targets	Your lowest-stat deployed chicken
Warning	Green beam appears 3 seconds before abduction
Prevention	Tap the abducted chicken rapidly to resist (mash mechanic)
Failure	Chicken removed from current event run
Recovery	Chicken returns after the run ends — not permanent loss
Strategy	Don’t deploy your weakest chickens — or keep them away from UFO paths

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Wave-by-Wave Breakdown — What to Expect

Early Waves (1–10) — Warm-Up Phase

Wave	Enemies	Difficulty	Strategy
1–3	Basic Alien Scouts	⭐ Easy	Any chicken works — farm Alien Shards
4–6	Alien Troopers + Scouts	⭐⭐ Easy-Medium	Position chickens at choke points
7–9	Shielded Aliens introduced	⭐⭐ Medium	Use ability-based chickens to break shields
10	Mini-Boss: Scout Commander	⭐⭐⭐	Focus fire — first significant challenge

Mid Waves (11–25) — Where It Gets Real

Wave	Enemies	Difficulty	Strategy
11–15	Alien Warriors + Shielded Troopers	⭐⭐⭐ Medium	Upgrade chickens between waves — don’t hoard currency
16–19	Elite Aliens + Beam Ships	⭐⭐⭐⭐ Hard	Abduction beams become frequent — protect key chickens
20	UFO Boss #1	⭐⭐⭐⭐ Hard	Full DPS rotation — use your strongest chicken’s ability
21–25	Mixed elites + Swarm waves	⭐⭐⭐⭐ Hard	AoE chickens essential for swarm management

Late Waves (26–50) — Endgame Grind

Wave	Enemies	Difficulty	Strategy
26–30	Alien Commanders + Shield Generators	⭐⭐⭐⭐⭐ Very Hard	Destroy shield generators FIRST
31–39	Swarm + Elites + Beam Ships simultaneously	⭐⭐⭐⭐⭐ Very Hard	Maximum chicken deployment — all slots active
40	UFO Boss #2 (Mothership)	🔴 Extreme	Ultimate boss — see guide below
41–50	Endless scaling	🔴 Extreme+	Survival mode — push as far as possible

Wave 50+ — Infinite Scaling

After Wave 50, the event enters infinite scaling mode where difficulty increases each wave without limit. Alien Shard drops improve with each additional wave, making deep runs the most efficient farming method for players with maxed-out chickens.

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Best Chickens for the UFO Invasion — Tier List

Not all chickens are equal in the UFO Invasion. Alien enemies have specific weaknesses and resistances that favor certain chicken types:

S-Tier — Must-Use Chickens

Chicken	Rarity	Why S-Tier	Best Against
🔥 Phoenix Rooster	Legendary	AoE fire damage melts swarm waves + shield-piercing ability	Swarm waves, shielded aliens
⚡ Thunder Hen	Legendary	Chain lightning hits multiple enemies in a line	Grouped enemies, beam ships
🌟 Celestial Fowl	Mythic	Highest single-target DPS + anti-boss ability	UFO Bosses, Commanders
🛡️ Iron Bantam	Epic	Tank chicken — draws aggro, prevents abductions of others	Protecting weaker chickens

A-Tier — Strong Picks

Chicken	Rarity	Why A-Tier	Best Against
🧊 Frost Chick	Epic	Slows enemies — buys time for DPS chickens	Fast alien troopers
💀 Shadow Cock	Legendary	Stealth ability — ignores shields entirely	Shielded aliens
🌿 Nature Hen	Rare	Healing aura — keeps other chickens alive longer	Sustained fights
🎯 Sniper Pullet	Epic	Long-range — picks off beam ship pilots	Beam ships, elite aliens

B-Tier — Situational

Chicken	Rarity	Why B-Tier	Use When
🐣 Starter Chick	Common	Decent DPS for new players	You have nothing better
🔨 Hammer Rooster	Uncommon	Strong single-hit but slow	Against slow, high-HP aliens
💨 Speed Fowl	Rare	Fast attacks but low damage per hit	Bonus rounds (speed matters)

C-Tier — Avoid in UFO Invasion

Chicken	Rarity	Why C-Tier	Problem
🐔 Basic Hen	Common	Too weak — instant abduction target	Gets beamed immediately
🍳 Egg Layer	Common	Utility chicken, not combat	No damage contribution

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UFO Boss Guide — How to Beat Both Bosses

Boss #1: Scout Commander (Wave 20)

Boss Detail	Info
Name	Scout Commander
Appears	Wave 20
HP	High — requires sustained DPS
Attack Pattern	Beam sweep + alien spawn + targeted strikes
Shield	Activates shield at 50% HP — must break before continuing damage
Weak Point	Glowing core exposed after shield break
Best Chickens	Celestial Fowl (DPS) + Shadow Cock (shield bypass) + Iron Bantam (tank)
Time Limit	None — but longer fights = more abduction attempts

Strategy:

1. Deploy Iron Bantam first — draws the boss’s initial attack
2. Position Celestial Fowl behind Iron Bantam — maximum DPS uptime
3. When shield activates at 50% HP, switch to Shadow Cock (ignores shields)
4. Once shield drops, burst with all remaining chickens
5. Watch for abduction beams during the fight — tap to resist

Boss #2: The Mothership (Wave 40)

Boss Detail	Info
Name	The Mothership
Appears	Wave 40
HP	Extremely High — multi-phase fight
Phase 1	Mothership deploys drones — destroy all drones to expose the core
Phase 2	Core exposed — DPS window opens (limited time)
Phase 3	Mothership enters rage mode — constant beam sweeps + elite alien spawns
Repeat	Cycle through phases until destroyed
Best Chickens	Phoenix Rooster (drones) + Celestial Fowl (core DPS) + Thunder Hen (add clear)
Difficulty	🔴 Extreme — requires strong roster

Strategy:

1. Phase 1: Use Phoenix Rooster’s AoE to clear drones quickly
2. Phase 2: Switch focus to Celestial Fowl — maximum single-target DPS on the exposed core
3. Phase 3: Thunder Hen handles add spawns while your DPS chickens focus the core
4. Use Iron Bantam throughout to absorb beam sweeps
5. Keep Nature Hen deployed for healing sustain during rage mode
6. Repeat the cycle — typically takes 3–4 rotations to destroy the Mothership

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All Event Rewards — Alien Shard Shop

Alien Shards earned during the event can be spent at the exclusive UFO Invasion Event Shop:

Exclusive Event Chickens

Chicken	Cost (Alien Shards)	Rarity	Ability	Priority
🛸 Alien Chick	5,000 Shards	Epic	Fires alien beam — pierces all shields	🟢 High — unique mechanic
👽 Grey Fowl	15,000 Shards	Legendary	Abduction ability — removes one enemy per wave	🟢 Very High — incredible utility
🌌 Cosmic Rooster	50,000 Shards	Mythic	AoE gravity well — pulls all enemies to center	🔴 Ultimate — event’s best reward

Cosmetic Rewards

Item	Cost	Type
UFO Hat (chicken cosmetic)	1,000 Shards	Cosmetic
Alien Antenna	2,000 Shards	Cosmetic
Mothership Trophy	10,000 Shards	Display item
Invasion Banner	3,000 Shards	Profile decoration
Green Glow Trail	5,000 Shards	Effect trail
“Invasion Survivor” Title	8,000 Shards	Title
UFO Farm Background	7,000 Shards	Profile background

Currency & Utility Rewards

Item	Cost	Effect
1,000 Gold	500 Shards	Standard currency
5 Growth Potions	1,500 Shards	Level up chickens faster
3 Rare Eggs	3,000 Shards	Chance at rare chickens
1 Legendary Egg	10,000 Shards	Guaranteed Legendary chicken
10 Trait Rerolls	2,000 Shards	Reroll chicken abilities
Alien Feed (x5)	1,000 Shards	Temporary stat boost for any chicken

Priority Shopping Guide

Priority	Item	Cost	Why First
🥇	Cosmic Rooster (Mythic)	50,000	Best event-exclusive chicken — won’t return
🥈	Grey Fowl (Legendary)	15,000	Unique abduction ability — event only
🥉	Alien Chick (Epic)	5,000	Shield-piercing beam — useful everywhere
4th	Legendary Egg	10,000	Guaranteed Legendary — permanent value
5th	Growth Potions	1,500	Accelerate your chicken progression
6th	“Invasion Survivor” Title	8,000	Event-exclusive bragging rights
7th	Cosmetics (various)	1,000–7,000	Personal preference
8th	Gold + Trait Rerolls	500–2,000	Standard resources — available elsewhere

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How to Farm Alien Shards Efficiently

Alien Shards are the event’s exclusive currency — and you need a LOT of them to buy everything in the shop.

Source	Shards per Run	Efficiency
Waves 1–10	~100–200 Shards	Low — tutorial range
Waves 11–20	~300–500 Shards	Medium — includes Boss #1 drops
Waves 21–30	~500–800 Shards	Good — scaling rewards
Waves 31–40	~800–1,500 Shards	High — includes Boss #2 drops
Waves 40+	~1,500–3,000+ Shards	Best — infinite scaling rewards
Bonus Waves	~200–500 Shards (bonus)	Random — always welcome
Daily Event Missions	~500–1,000 Shards	Easy — complete daily
First Clear Bonus	2,000 Shards (one-time)	Clear Wave 40 for the first time

The Farming Strategy

Phase	Goal	Target
Day 1	Clear Wave 20 (Boss #1) — earn First Clear bonuses	~2,000+ Shards
Day 2–3	Push to Wave 40 (Boss #2) — unlock deep farming	~5,000+ Shards
Day 4+	Farm Wave 40+ runs repeatedly	~2,000–3,000 Shards per run
Daily	Complete daily event missions	~500–1,000 Shards bonus
End of Event	Spend ALL Shards in event shop	Buy everything you can

To buy everything in the shop (Cosmic Rooster + Grey Fowl + Alien Chick + all cosmetics + utility items), you need approximately 110,000+ Alien Shards. At ~2,500 Shards per optimal run, that’s about 44 runs — or roughly 6–8 runs per day over a week-long event.

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Chicken Upgrade Strategy for the Event

During the event, prioritize upgrading chickens that excel against aliens:

Upgrade Priority	Chicken	Why
🥇	Your best AoE chicken	Swarm waves are the most common enemy type
🥈	Your best single-target DPS	Essential for both UFO bosses
🥉	Your tank chicken	Prevents abductions + absorbs boss damage
4th	Your shield-bypassing chicken	Shielded aliens appear from Wave 7 onward
5th	Your healing/support chicken	Sustain for deep Wave 40+ runs

Event-Specific Upgrade Tips

Tip	Why
Level AoE chickens to max first	60% of event waves are swarm-type
Don’t waste Gold on common chickens	They’ll get abducted regardless
Use Growth Potions from the event shop	Buy potions → use on your carry → farm faster → earn more Shards
Feed Alien Feed to your boss-killer	Temporary stat boost specifically for Boss waves
Save Trait Rerolls for Legendary+	Don’t waste rerolls on anything below Legendary

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Co-Op vs. Solo — Which Is Better for Farming?

Mode	Advantages	Disadvantages	Best For
Solo	Full Shard earnings, no split	Harder at high waves, no backup	Players with strong rosters
Co-Op	Combined chicken power, easier bosses	Shard earnings may be split	Pushing past Wave 40, boss kills

Co-Op Tips

Tip	Why
Coordinate chicken roles	One player tanks, one DPSes, one heals
Don’t overlap AoE positions	Spread chickens for maximum wave coverage
Communicate boss phases	Call out shield breaks and DPS windows
Share abduction resistance	Take turns tapping to resist beams
Play with friends, not randoms	Coordination is key — randoms may leave mid-run

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Common Mistakes That Waste Your Event Time

Mistake	Why It Hurts	Fix
Deploying weak chickens	Instant abduction targets — wasted roster slots	Only deploy Epic+ chickens
Ignoring shield generators	Shielded aliens are invincible until generator dies	Always target shield generators first
Not tapping during abductions	Losing key chickens mid-run	Watch for green beams — tap immediately
Spending Shards on Gold	Gold is available everywhere — Shards are limited	Prioritize event-exclusive items
Quitting before Wave 40	Missing the Mothership boss and best Shard drops	Push to at least Wave 40 every run
Not doing daily missions	Missing 500–1,000 free Shards per day	Complete daily event missions first
Spreading upgrades across all chickens	Weak across the board	Focus upgrades on your 5 best event chickens
Playing without a healer	Chickens die → roster depleted → run ends early	Always deploy Nature Hen or equivalent

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Quick Facts About Grow Chicken Fighter

Detail	Info
Game	Grow Chicken Fighter
Platform	Roblox
Genre	Idle Battler / Collection
Core Loop	Grow chickens → Train → Fight → Collect → Repeat
Events	Regular limited-time events with exclusive rewards
Current Event	UFO Invasion 🛸
Monetization	Free-to-play with optional purchases
Community	Active Discord + Roblox group

Grow Chicken Fighter combines idle game progression with active battle strategy — players grow and train unique chickens, each with distinct abilities and stats, then deploy them in various PvE and PvP battle modes. The UFO Invasion event represents the game’s most ambitious PvE content to date.

For a broader look at battle and collection games on Roblox, visit the Roblox Wikipedia page.

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The Event Checklist — Don’t Miss Anything!

Step	Action	✅
1	Update Grow Chicken Fighter to latest version	☐
2	Enter the UFO Invasion event from the main menu	☐
3	Complete Waves 1–10 (warm-up)	☐
4	Beat the Scout Commander (Wave 20 Boss)	☐
5	Claim First Clear bonus (2,000 Shards)	☐
6	Push to Wave 40 — beat the Mothership	☐
7	Complete daily event missions every day	☐
8	Farm Wave 40+ runs for maximum Shards	☐
9	Buy Cosmic Rooster (50,000 Shards) — top priority	☐
10	Buy Grey Fowl (15,000 Shards)	☐
11	Buy Alien Chick (5,000 Shards)	☐
12	Buy remaining shop items with leftover Shards	☐
13	Claim “Invasion Survivor” Title	☐
14	Spend ALL Shards before event ends — they expire!	☐
15	🐔 UFO Invasion COMPLETE!	☐

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Pro Tips for UFO Invasion Mastery

• Deploy your chickens in a defensive formation — tank in front, DPS behind, healer in the back
• Always watch for the green abduction beam — tap rapidly the moment you see it
• Target shield generators before shielded aliens — shielded enemies are invincible otherwise
• Save your strongest chicken’s ability for boss DPS windows — don’t waste it on regular waves
• Buy Growth Potions from the event shop early — use them to strengthen your carry chicken, which speeds up all future farming runs
• Complete daily event missions FIRST each day — they’re the easiest Shard source
• Don’t deploy common or uncommon chickens — they’ll be abducted immediately and waste roster slots
• Push past Wave 40 for infinite scaling rewards — every additional wave gives better Shard drops
• Prioritize event-exclusive chickens in the shop — Gold and trait rerolls are available outside the event; Cosmic Rooster is NOT
• Play co-op with friends for boss kills — coordination makes Wave 40 Mothership significantly easier

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