Live play for Mexicano is coming soon.
Americano shipped in Week 5. Mexicano (code: mexicano) lands in Week 6 together with the rest of the formats — Fixed-Pair groups+KO, Mix Tournament, Team League, Mexicano, and the names-only wrappers (Round Robin, Swiss, Knockout, Mixicano).
The engines for all nine formats are already in
packages/shared/src/engines/ with 190 tests — only the play UI wiring is outstanding.