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Knowledge Xeno (3.5e Skill)

Author: Eiji-kun (talk)
Date Created: 6-29-11
Status: Complete
Editing: Mechanical changes on Talk.
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Knowledge Xeno (Int; Trained Only)Edit

The knowledge devoted to operating technology, learning about aliens, and forbidden creatures from other dimensions. This is an expansion to the usual Knowledge skills.

Knowledge Xeno can identify xenotheric and xenoblooded creatures, advanced technology, complex physics, navigation in outer space, and the identification of eldritch creatures such as abominations and elder evils.

DC Examples
10 Basic mechanical and computer operation.
20 Complex mechanical and computer operation, simple hacking such as obtaining a poorly secure password.
30 Hacking a secure password.
40 Hacking a very secure password.
+20 Operating completely unknown alien technology correctly.
+50 Operating completely unknown alien technology correctly and reverse engineering its functions.

Answering a question within your field of study has a DC of 10 (for really easy questions), 15 (for basic questions), or 20 to 30 (for really tough questions).

In many cases, you can use this skill to identify monsters and their special powers or vulnerabilities. In general, the DC of such a check equals 10 + the monster’s HD. A successful check allows you to remember a bit of useful information about that monster.

For every 5 points by which your check result exceeds the DC, you recall another piece of useful information


Usually none. In most cases, making a Knowledge check doesn’t take an action—you simply know the answer or you don’t.

Try AgainEdit

No. The check represents what you know, and thinking about a topic a second time doesn’t let you know something that you never learned in the first place.


If you have 5 or more ranks in Knowledge (xeno), you get a +2 bonus on Survival checks in outer space and on alien planets.


An untrained Knowledge check is simply an Intelligence check. Without actual training, you know only common knowledge (DC 10 or lower).

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