Eclipse Phase x ALT2400 / ACRIMONY / Otsuka RPG Day

Your mind is software. Program it. Your body is a shell. Change it. Death is a disease. Cure it. Extinction is approaching. Fight it.

A Firewall agent is missing. A sealed asteroid colony is hiding something. You’re sent in undercover, armed with cortical backups and strict orders: find Chi, contain the threat, don’t die permanently.

This is Eclipse Phase, the transhumanist post-apocalypse. Instead of its crunchy system, we will use the fast, rules-light 2400 system.

No experience needed. Characters provided. Bring a pencil, some polyhedrals and a backup morph (=body).

### ===RULES===

### ▶️ PLAY

• Players describe what their characters do.
• The GM only calls for rolls when an action involves risk.
• If an action is impossible, costly, or needs setup, the GM will say so.

***

### 🎲 ROLLING

• Default roll: 1d6
• With relevant skill: Roll your skill die (d8, d10, etc.)
• Hindered (injured, overloaded, etc.): Roll d4 instead

Modifiers:

• Helped by circumstances: +1d6
• Helped by an ally: They roll their skill die and share the risk
• Take the highest die

Results:

• 1–2: 🚨 Disaster — You suffer the full risk. GM may say you fail entirely. If risking death, you die.
• 3–4: ⚠️ Setback — You suffer a lesser consequence or partial success. If risking death, you’re injured.
• 5+: ✅ Success — The higher the roll, the better. Even if you don’t get what you want, you gain info or an advantage.

***

### 📈 ADVANCEMENT

• After each operation:
• Gain d4 credits (₡)
• Increase one skill:
• none → d8 → d10 → d12

***

### 🛡️ DEFENSE

• Declare an item or robotic limb broken to negate a hit.
• Broken gear is useless until repaired.

***

### ☠️ DEATH & BACKUPS

• If killed:
• Your cortical cartridge can be resleeved in a new body (skin)
• Or plugged into an ally as a HUD ghost (like AR support)
• If all backups are lost: make a new character ASAP
• Prioritize inclusion over realism

***

### 🎙️ GM GUIDANCE

• Focus on:
• Behaviors, risks, and obstacles, not dice
• Framing ethical dilemmas and spotlighting all players
• Use d6 tests for random chance:
• (1–2) = trouble
• (3–4) = signs of it
• Use safety tools:
• Lines, veils, rewinds, pauses, fast-forwards
• Feel free to improvise rulings and revise as a group on breaks