
Aethos DEMO
A downloadable game
Prepare to descend into the unknown
Kickstarter Coming 2.3.2026
Aethos
Explore. Upgrade. Survive.
Humanities last hope lay beyond the stars. After decades of war earth has become a toxic wasteland. The Planet Aethos which is 10 light years away may be able to support human life , but first humans must send something that can handle the trip. Players take control of Kyra, an advanced AI explorer, you’ve spent years studying the distant planet Aethos from orbit in the mothership Elysium to see if the planet can support human life. But when a massive energy surge cripples Elysium, survival becomes your only mission. With damaged thrusters and failing systems, you must descend into the alien world below, scavenging for upgrades, unlocking new abilities, and uncovering the secrets buried deep within Aethos’ ancient ruins.
What Kyra doesn’t know is that the surge was no accident.
Deep within the planet waits zyrak a colossal sentient war construct forged by the superior Nyzari race. Sent to Aethos long before Kyra’s arrival, Zyrak’s purpose is to judge the planet’s potential for harvesting and to eliminate anything that jeopardizes the Nyzari claim. Upon detecting Kyra, he planted unstable energy cores across Aethos to disable Elysium and force her retreat, ensuring humanity never gains a foothold.
Kyra refuses to retreat. Instead, she descends into Aethos to hunt down and destroy the unstable energy cores disrupting Elysium so she can restore her ship and confront Zyrak herself. The fate of humanity hinges on stopping the metal titan who seeks to claim Aethos for the Nyzari.
Power Up & Evolve
Aethos is a world of forgotten technology and strange energy waiting to be harnessed. Discover powerful upgrades to enhance Kyra’s abilities and unlock new paths:
Boost Thrusters – Regain mobility and soar across hazardous terrain.
Plasma Blaster – Arm yourself to fight off hostile lifeforms.
Nano Shield – Absorb energy to charge your shields to survive harsh environments and enemy attacks.
Phase Shift – Slip between dimensions to bypass obstacles.
Cryo Cannon - Freeze enemies and use them as platforms
Charged Mega Shot - Consume Energy to charge your plasma gun to fire a devastating projectile
Teleport - At any given moment teleport back into your jump ship from where you can select different sectors to travel to or take refuge on Elysium
Face Powerful Guardians
The demo plunges you into 3 deadly zones, each guarded by a colossal sentinel. These towering guardians protect the Stasis Cores that have seized control of your ship. Defeat them to uncover the truth to what happened to your ship. The final game will pit you against seven formidable bosses, each unlike the last. Victory will demand a fresh strategy for every encounter, adapt, learn, and overcome… or fall.

Unravel the Mystery
Was the energy surge just a random event, or is something lurking beneath Aethos’ surface? Every upgrade brings Kyra closer to the answer, but will she be ready for what she finds?
🕹️ Metroidvania-inspired 8-bit adventure
🌌 A vast alien world to explore
⚡ Upgrade and evolve Kyra’s abilities
🎶 Atmospheric award-winning chiptune soundtrack
👾 3 intense boss battles in the demo!

Controls

Standard controls :
D-PAD – move Kyra
B-Button – Shoot weapon
A button – Jump
Start -Pause Game
Controls requiring upgrade:
Select – toggle weapon type
A + Up – Hover/fly
B + Down – Charge Shields
Select + Down – Teleport to Jump ship
Down + A – Jump down
Hold B – Charge Mega shot
Interaction Points

Pulse Ore. A mineral found in the Aethos soil. Kyra can use the raw material to convert to energy.

Charging station: The energy surge has disabled these in Elysium. Find a way to bring them back online and Kyra can use them to fully charge her energy meter.
Re-Spawn Beacon. When Kyra has backups stored she will automatically be re assembled at the last visited beacon. If no backups exist Kyra will reboot back on Elysium
The HUD

- Available backups stored (lives)
- Shields (health)
- Energy Meter. Once energy is depleted Kyra can only perform basic mechanic maneuvers. Jump and shoot. All special abilities use energy.
Continue Screen

If Kyra exhausts her all backups, she cannot reconstitute at the last Beacon. Instead, a full-system reboot is triggered aboard the Elysium, restoring her body but preserving all mission progress. But if all reboot attempts are lost, Kyra's systems will shut down permanently… and the mission ends in failure, leaving humanity to its fate.
The Demo will have 3 reboot attempts available. Final game will have 8 .
| Updated | 3 days ago |
| Status | In development |
| Author | RBG Entertainment |
| Genre | Adventure |
| Tags | aethos, aethos-game, NES (Nintendo Entertainment System), nes-game, NES ROM, nintendo |
Download
Development log
- Looking for Demo Feedback — Now’s Your Chance3 days ago
- **UPDATED DEMO 2.6 Patch6 days ago
- **Kickstarter Pre-Launch Page Up Now*12 days ago
- Aethos Demo Update Now Live!40 days ago
















Comments
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I may be biased from creating the soundtrack, but this game is AMAZING!! A wonderful aesthetic, great gameplay, and an extensive world to explore make Aethos a must have for the NES.
Aethos is easily one of the best demos I've played this year for a new NES game. Nice visuals, really good music and controls, interesting level design, fun and challenging boss fights and cool upgrades that play into the metroidvania part of the game. What else could you possibly want in a 8-bit game?
PLAY THIS!