Trait-like: Open Source, Complex, Roguelike, Low System Requirements, Post-Apocalyptic, Highly Customizable, Offline Superiority
Normal: Detail-Oriented Playerbase, Genetic Code Chaos, Occasional Tedium
Post-Threshold: Art, Cult Following
Your source code is downloadable by anyone. Anyone can read you like an open book. Tell that to your psychiatrist.
Your inner mechanics are complex and sometimes deeply interconnected. Players need longer time to grasp you but they don't consider that to be a bad thing. At all.
One life only. Don't mess up.
Low System Requirements
Basically a 1980 digital watch could run you. Don't change, man.
Finally you are free of the shackles of the society and its pesky amenities such as clean water.
You have a ton of mods and settings. The players will tailor you to their liking.
You are immune to Internet outages. Online games envy your untouchable nature.
High IQ, control freaks, OCDs, complexity enthusiasts, active imaginations... These are the people that are drawn to you. For better and/or worse.
Genetic Code Chaos
Your source code is changing rapidly! You gain and lose features fast. Bugs too.
Sometimes players feel you make them jump through too many hoops and regard you as the Choremaster3000. It's not bad but it's there sometimes.
You are regarded as digital art. Don't let it get to your head... unless the form modestly requires it, but not without losing the viewpoint that whispers the underlying post-modern societal commentary to the observer.
Players really love what you do. Like, a lot. Maybe even a bit too much. It's thrilling and intimidating at the same time.