PC Building Simulator is seeing a massive spike in interest after launching as Epic Games Store’s free game of the week yesterday.

Since being made free, the title has been downloaded over 2.5 million times in 24 hours. Within the first three hours of going free, the title was downloaded one million times. Its overall concurrent player count has risen to a whopping 1500% increase. The title was originally released on Steam back in 2018.

Epic Games Store is offering 10% off all workshop DLCs and 50% off the Esports Expansion career pack. People who purchased DLC before the discounts went live will get a partial refund to match the new prices.

PC Building Simulator will be free to download on the Epic Games Store until October 14.