Lots of fun to writing, try doing it yourself! Blog about it over here: http://klotzandrew.com/blog/rust-wasm-tetris
# install dependancies
cargo update
# build assets
wasm-pack build --target web
# host assets locally
python -m SimpleHTTPServer
# lint code (optional)
cargo clippy
Now visit http://0.0.0.0:8000 to play
Example of interacting with .wasm files is in index.html, check it out