Botswana

Web-based game engine for bot wars, programmable via JavaScript. Written in 2013–2015.
The README has more information. Also see the initial release blog post.
Links
Installation
Full installation/configuration instructions are in the README.
Screenshots
Default ruleset

Demo1 ruleset

Demo2 ruleset

Demo3 ruleset

Conveyor ruleset

Expulsion ruleset

Orbit ruleset

Walls ruleset

Changelog
- 14 Jan 2013: Released 2.0
- 14 Feb 2011: Released 1.0