Square Enix released today the DEMO version of the upcoming Minna de Waiwai! Spelunker Nintendo Switch game in Japan. The DEMO available for free from the Japan Nintendo eShop and the final version will be available from April 20, 2017.
In the DEMO you can try the first early stages of the game and you can enjoy the multiplayer mode too (upto 4 players) but only in local mode. You can’t play with the multiplayer mode online and according to Square Enix you can’t move the save data file to the final version of the game.