Thought I could add in a few details for those who'd like to get the game. NBA 2K21 will be free on the Epic Games Store until May 27th. As long as you claim the game before the deadline, it will stay in your library permanently.
Here's the link to claim the game. Just sign into your Epic Games account and click "Get".
https://www.epicgames.com/store/en-US/p/nba-2k21After playing the blunder that is 2K21 next gen, I've dived back into NBA 2K20 on PC not too long ago to continue an old MyLEAGUE save file using one of Thunder Shaq's rosters. Assuming that Epic handles the game files similar to Steam to allow mods, I think I'll give this a whirl and check out what has been released in the modding section.
Cheers!