Publishine Games announced on June 30 that the sales of the cave sandbox survival game Core Keeper currently being distributed early on Steam has exceeded 1 million.


This is a sandbox survival game set in the underground cave. In addition to solo play, up to eight people online cooperation play, players will survive as an explorer who has lost their way into the mysterious underground world. Digging a randomly generated vast map, fighting enemies and acquiring resources, creating new tools and materials in craft. Then build and expand the base, and proceed further.

Core Keeper launched early access to PC (Steam) on March 8 this year. The sales were 100,000 in two days, 250,000 in six days, and 500,000 in 14 days. And this time, we have finally achieved 1 million platforms in less than four months since the distribution.

STEAM user reviews are now very popular with 89%, and it is certain that such high reputation has led to sales. On June 15, the first large update Sinking Sea was delivered. Environment on the vast sea and islands, boats as a means of transportation, portals (transfer devices), and new enemies have been added.

With the update, the number of simultaneously connected players, which had been a little calm, has been greatly recovered (Steamdb). The number of viewers on Twitch has also increased, and this may also be a good material for sales. Furthermore, during this time, it supports Japanese display. This work is planned to be added and expanded in the future.

Core Keeper is being distributed early for PC (Steam). Until July 8, it can be purchased as a summer sale for 1188 yen, 10%off.