The official Pokémon Singapore website has announced that Pokémon Tretta has launched in Singapore at the Pokémon Center Singapore. There are 4 machines to play the game at the store.

Pokémon TRETTA is available in Pokémon Center Singapore NOW!

4 Pokémon TRETTA game machines were launched in Pokémon Center Singapore started from 1st June 2019. Moreover, Pokémon Center Singapore is carrying out a Campaign.
When you buy any goods in Pokémon Center Singapore, show a TRETTA chip to cashier, 1 type of Pikachu TRETTA chip will be given randomly.
Don’t miss the chance to get a lovely and adorable Pikachu chip!
See you in Pokémon Center Singapore!

*Present of Pikachu TRETTA chips are subject to a first-come-first-served basis while stocks last.

Source: https://sg.portal-pokemon.com/topics/game/190610130000_pokemon_tretta.html