The Mecha RPG is the second collaboration between myself and my TTRPG-dork (lesser so than I am, but still) friend Fuchi. It started... uh... well, I don't know how it started, but I think it involved one too many glasses of wine and a desire to blow something up.
The rulebook can be found here.
And there's a number of things I haven't added to it yet, such as the Addiction and Needs Glasses disads. Oh well.