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A tool for loading random tables, rolling on those tables, and rendering the output.

Todo List

  • Create schema to define valid JSON document
  • Integrate schema validation for loaded JSON document
  • Allow inner-table logic*
  • Create structure for loading tables
  • Create command line tool
  • List available tables (with help) (e.g. rollio roll -h)
  • Look to parameterization of table rolls
  • Roll on tables (e.g. rollio roll background)
  • Create structure for SWN batch of tables to roll at once
  • Add ability to roll a dice expression via rollio roll
  • Add parameter -w to rollio roll that allows override

* - By inner table logic I'm referring to "On a d10 table, when you roll a 9 or 10, roll on this table twice using a d8"


Add this line to your application's Gemfile:

gem 'rollio'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rollio


TODO: Write usage instructions here


After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

Code of Conduct

Everyone interacting in the Rollio project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.

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