There is a type chart in the games, but I think that one is screwed up, like grass being the worst type, while it's a starter and thus should be equal to water and fire. Too bad I can't change it, but I can say how I think that it should be. I try to make things like they are in real life, but I'm also trying to make the chart as balanced as possible. If you have a comment or suggestion please mention it on the talk page. I'm trying to give every type at least three resistances, and a maximum of five. The changes are shown in different colours (with not very effective in pink, super effective in light green, normal effective in light blue, and immune in gray).