diff --git a/README.md b/README.md
index aae3a13..4d67c68 100644
--- a/README.md
+++ b/README.md
@@ -504,18 +504,18 @@ See also [http://areweideyet.com/](http://areweideyet.com/) and [Rust and IDEs](
 
 * Allegro
   * [SiegeLord/RustAllegro](https://github.com/SiegeLord/RustAllegro) — [Allegro 5](http://liballeg.org/) bindings [<img src="https://travis-ci.org/SiegeLord/RustAllegro.svg?branch=master">](https://travis-ci.org/SiegeLord/RustAllegro)
-* Amethyst
-  * [ebkalderon/amethyst](https://github.com/ebkalderon/amethyst) — data-oriented game engine [<img src="https://travis-ci.org/ebkalderon/amethyst.svg?branch=master">](https://travis-ci.org/ebkalderon/amethyst)
-* [vityafx/challonge-rs](https://github.com/vityafx/challonge-rs) [[challonge](https://crates.io/crates/challonge)] — Client library for the Challonge REST API. Helps to organize tournaments. [<img src="https://travis-ci.org/vityafx/challonge-rs.svg?branch=master">](https://travis-ci.org/vityafx/challonge-rs)
+* Challonge
+  * [vityafx/challonge-rs](https://github.com/vityafx/challonge-rs) [[challonge](https://crates.io/crates/challonge)] — Client library for the Challonge REST API. Helps to organize tournaments. [<img src="https://travis-ci.org/vityafx/challonge-rs.svg?branch=master">](https://travis-ci.org/vityafx/challonge-rs)
 * Corange
   * [lucidscape/corange-rs](https://github.com/lucidscape/corange-rs) — [Corange](https://github.com/orangeduck/Corange) bindings
 * Entity-Component Systems (ECS)
   * [slide-rs/specs](https://github.com/slide-rs/specs) — Specs Parallel ECS [<img src="https://travis-ci.org/slide-rs/specs.svg">](httpsL//github.com/travis-ci.org/slide-rs/specs)
-* Piston
+* Game Engines
+  * [Amethyst](https://www.amethyst.rs) — Data-oriented game engine [<img src="https://travis-ci.org/amethyst/amethyst.svg?branch=master">](https://travis-ci.org/amethyst/amethyst)
   * [Piston](http://www.piston.rs) — [<img src="https://travis-ci.org/PistonDevelopers/piston.svg?branch=master">](https://travis-ci.org/PistonDevelopers/piston)
 * SDL [[sdl](https://crates.io/keywords/sdl)]
-  * [AngryLawyer/rust-sdl2](https://github.com/AngryLawyer/rust-sdl2) — [SDL2](http://www.libsdl.org/) bindings [<img src="https://travis-ci.org/AngryLawyer/rust-sdl2.svg?branch=master">](https://travis-ci.org/AngryLawyer/rust-sdl2)
   * [brson/rust-sdl](https://github.com/brson/rust-sdl) — [SDL1](http://www.libsdl.org/) bindings [<img src="https://travis-ci.org/brson/rust-sdl.svg?branch=master">](https://travis-ci.org/brson/rust-sdl)
+  * [AngryLawyer/rust-sdl2](https://github.com/AngryLawyer/rust-sdl2) — [SDL2](http://www.libsdl.org/) bindings [<img src="https://travis-ci.org/AngryLawyer/rust-sdl2.svg?branch=master">](https://travis-ci.org/AngryLawyer/rust-sdl2)
 * SFML
   * [jeremyletang/rust-sfml](https://github.com/jeremyletang/rust-sfml) — [SFML](http://www.sfml-dev.org/) bindings [<img src="https://travis-ci.org/jeremyletang/rust-sfml.svg?branch=master">](https://travis-ci.org/jeremyletang/rust-sfml)
 * Voxlap