On The Air Solo house rules

When considering using it for solo play, the Intention System seems unnecessarily fiddly with its "how many dice do I roll and what do I keep" ("a trait of 1 means roll 3 dice and keep the 2 highest, a trait of 2 means roll 4 dice and keep the highest 2, etc.").

The "tag a descriptor to bump a die up to a d8" and "tag a flaw to bump a die down to a d4" feels too involved on top of that.

At its core it's just the 2d6 pbta results mechanic, so let's remove the extra steps and ignore the multiple die types/tagging traits. Simplify it to trait value plus 2d6 roll and ignore everything else.

Keep the three kinds of edges, but for "Forte" simply roll with advantage. (Roll 3 dice and keep the 2 highest.)

For spending airwave tokens, remove Power Tagging (d8) and replace it with roll with advantage. For earning airwave tokens, you can invoke a flaw to earn a token but ignore the (d4) change and make it roll with disadvantage instead.

Inspiration

http://eryssel.blogspot.com/2018/07/tools-1-dice-for-rpging-part-2.html

A Simple Solo Gaming App

http://www.ppmgames.co.uk/product/sole-engine-with-dungeon-crawler/

The Moxie System

Moxie System

Character Generation

Name/Species/Description: Make it up

Belief or Goal: Your character's reason for doing stuff.

Each character has four Attributes — numbers that describe his or her basic abilities. These are Muscle, Moves, Wits, and Moxie. Muscle is simply how strong a character is. Moves includes speed and coordination. Wits is just what it sounds like; intelligence, knowledge, that sort of thing. Moxie is how "pushy" your character is. A character with lots of Moxie has a lot of nerve.

Assign the scores -1, 0, +1, +2 to your four attributes.

Hits: Roll 1d6 and add 6 to determine how many Hits you can take before you Fall Down.

Universal Damage Die: 1d6
___________
Actions

roll 2d6, add modifier
Advantage: roll 3, drop the lowest.
Disadvantage: roll 3, drop the highest.

2-6 Oh No!
7-9 Partial Success/Failure
10 + Success
13+ Critical Success

(With DNA stolen from Steve Jackson Games' TOON)

Roll + Tags

Inspired by City of Myst and Vagabonds of Dyfed

Fate Accelerated Hybrid

Powered by The Apocalypse

The PBTA mechanic is usually to roll two six-sided dice and add a modifier (from a stat, skill, or trait) and consult the chart.

Some games use Roll with Advantage (roll three dice and ignore the lowest) and Roll with Disadvantage (roll three dice and ignore the highest) instead of a modifier.

6 - below, failure or setback
7-9 partial success, success with complication, or similar
10-12 success