Eggman Empire

EGGMAN EMPIRE

A Sonic the Hedgehog Fan Game by ProjectGlaive

🔗 projectglaive.com

THE STORY

Green Hill Zone. The most famous stretch of land in the entire world — rolling emerald hills, spiralling palm trees, crystal-clear skies, and the nauseating smell of fresh flowers.

Dr. Ivo Robotnik — the self-declared greatest scientific genius in history — absolutely cannot stand it.

For years, that insufferable blue hedgehog has thwarted every one of Robotnik's grand schemes. Every time the Doctor was on the verge of global domination, Sonic came spinning through and ruined everything. The Chemical Plant. The Death Egg. Eggmanland. All of it, reduced to rubble by a hedgehog with an attitude problem.

Not this time.

While Sonic is busy being annoyingly heroic elsewhere, Robotnik has set his sights on something personal. Green Hill Zone itself. That idyllic paradise Sonic calls home. He's going to industrialise every last square inch of it — replace every flower with a smokestack, every hill with a factory, every chirping bird with a mechanical Badnik worker.

The Eggman Empire begins here. And it begins NOW.

OBJECTIVE

You play as Dr. Eggman commanding his Badnik army in a real-time strategy game. Your mission: terraform 90% of Green Hill Zone into industrial wasteland before Sonic and his friends destroy your headquarters.

Build a network of industrial structures expanding outward from your Egg Base HQ, deploy Badnik units to gather resources, and fend off counterattacks from Sonic's allies — all while managing rings, oil, and metal to keep the empire growing.

Terraform 90% of the map to WIN. Lose the HQ to 8 hits and it's game over.

BADNIK UNITS

Badniks are Eggman's robot workforce. They are deployed instantly from the HQ and roam the map automatically.

Badnik	Role	Cost
Motobug	Gathers Rings passively every 2 seconds	40 Rings
Crabmeat	Mines Metal from the terrain	50 Rings
Grounder	Drills for Oil from underground deposits	60 Rings
Buzz Bomber	Air attack unit — destroys Sonic's Star Post checkpoints	80 Rings + 20 Metal
Orbinaut	Defender — intercepts hero spin attacks. Loses one spike ball per hit, destroyed after 5 hits	70 Rings + 30 Metal

⚠️ Each subsequent Badnik of the same type costs progressively more (e.g. 2nd Motobug costs 80 Rings, 3rd costs 120, etc.). Costs reduce if Sonic destroys one.

BUILDINGS

Buildings terraform the map and generate resources. They must be placed adjacent to the HQ or another existing building. Some require specific terrain types.

Building	Bonus	Cost	Notes
Animal Capsule	+2 Power Cap	50 Rings	Small footprint, chain-build cheaply
Chemical Plant	+5 Power Cap	150 Rings + 40 Metal	Essential for larger Badnik armies
Oil Ocean Rig	+3 Oil/sec	120 Rings + 30 Metal	Must be placed on an oil pool tile
Scrap Brain Factory	+4 Metal/sec	180 Rings	Must be placed on a rock tile
Casino Night Tower	+8 Rings/sec	100 Metal + 100 Oil	Passive luxury income building
Oil Refinery	+6 Oil/sec, +2 Rings/sec	300 Rings + 80 Oil	Requires existing oil to build
Death Egg	+15R, +8O, +8M/sec, +10 Power	1000R + 500O + 500M	Massive 5-tile terraform radius

💡 Bonus income tip: An Oil Ocean Rig placed directly on an oil pool tile earns +2 bonus Oil/sec. A Scrap Factory placed on a rock tile earns +2 bonus Metal/sec.

🕐 In Normal and Hardboiled difficulty, buildings take time to construct before providing any bonus. The Death Egg takes the longest — plan ahead!

THE HEROES — SONIC'S ALLIES

Sonic and his friends will counterattack once you've started terraforming. Each hero unlocks when you reach a terraform milestone:

Hero	Colour	Unlocks At	Behaviour
Sonic the Hedgehog	Blue	0% (from 5% terraform)	Fast spin attacker, standard damage
Tails	Orange	15% terraformed	Slightly slower, moderate damage
Amy Rose	Pink	30% terraformed	Moderate speed and damage
Knuckles	Red	45% terraformed	Slower but hits harder
Shadow	Black	60% terraformed	Fastest of all, highest damage

Heroes always target Orbinauts first (if any are on the map), then other Badnik units, and only attack your HQ directly when the map is completely clear. The HQ can only take 8 hits before it's destroyed — place Orbinauts near it!

Attack frequency scales up as you terraform more of the map — the closer you get to 90%, the more relentless the assault becomes.

CHAOS EMERALDS — POWER-UPS

Seven Chaos Emeralds randomly appear on the map as spinning coloured gems. Click or tap one before it disappears to claim a random bonus:

• ➕ +50 Rings / +50 Oil / +50 Metal — instant resource injection
• ⚡ +5 Max Power — expand your Badnik deployment capacity
• 💊 Full Badnik heal — restores all unit HP instantly
• 🏠 Full HQ heal — restores the Egg Base to full HP
• 🌟 +30 of all three resources — the rare white emerald bonus

Emeralds appear more frequently on Easy and very rarely on Hardboiled. They don't spawn until you've reached 5% terraform.

STAR POSTS — SONIC'S CHECKPOINTS

Sonic's golden Star Post checkpoints are scattered across Green Hill Zone. They block your buildings from expanding into their surrounding area.

Destroy them with Buzz Bombers to clear that territory and unlock it for building. Note: destroying a Star Post does not terraform the area — you must build a structure there to claim it.

RESOURCES

Resource	Colour	Used For	Generated By
Rings	Gold	Almost everything	Motobug, HQ (passive trickle), Casino Tower
Oil	Blue	Advanced buildings and Grounger	Grounder, Oil Ocean Rig, Oil Refinery
Metal	Grey	Military Badniks, most buildings	Crabmeat, Scrap Factory
Power	Red	Max active Badnik units	Chemical Plant, Animal Capsule, Death Egg

DIFFICULTY MODES

Mode	Description
🟢 EASY	Standard gameplay. Buildings construct instantly. Frequent Chaos Emeralds. 8 Star Posts.
🟡 NORMAL	Higher resource costs, more damage from heroes, faster attacks, buildings take time to build, 14 Star Posts. Starting Power reduced to 5.
🔴 HARDBOILED	Maximum challenge. Even higher costs, very fast heroes, double construction times, 18 Star Posts. Very rare Chaos Emeralds. Starting Power reduced to 3.

TIPS & STRATEGY

🔶 Start with Motobugs — you begin with only 50 Rings. Deploy a Motobug immediately to start generating income, then build from there.

🔶 Place Animal Capsules early — cheapest way to raise your power cap and get more Badniks on the field faster.

🔶 Build Oil Rigs on oil pool tiles (dark blue patches on the map) and Scrap Factories on rock tiles (brown rounded bumps) for bonus resource income.

🔶 Orbinauts are your shield — heroes target them first, protecting everything else. Keep 1–2 near your HQ at all times. They die after 5 hits so replace them regularly.

🔶 Buzz Bombers are your expansion key — you cannot progress without destroying Star Posts. Build several and watch your territory grow.

🔶 The Death Egg changes everything — if you can afford one, its 5-tile terraform radius and +10 power bonus can win the game almost on its own.

🔶 Click the Chaos Emeralds! — they're rare and temporary. The HQ healing emerald at a critical moment can be the difference between winning and losing.

🔶 In Normal/Hardboiled: plan your building queue carefully — a Chemical Plant under construction gives no power yet. Build Animal Capsules first for cheaper, faster power.

🔶 Escape key cancels a building placement selection. P key or the PAUSE button freezes the game.

CREDITS

Eggman Empire is a fan game created by ProjectGlaive.

This game is a fan-made tribute and is not affiliated with or endorsed by Sega. Sonic the Hedgehog and all related characters are trademarks of Sega Corporation.

🔗 Play more ProjectGlaive games and content at projectglaive.com

"Now begins the glorious era of the Eggman Empire!" — Dr. Eggman