Hi. What do you mean by "compiled game"? if you mean that the game uses this, and some other assets, then yes, it is allowed.
You cannot redistribute just the art itself, no matter if you paid for it or not, or if you redistribute it for free or not
If you want to use this asset pack for a commercial project (e.g a project that you directly make money from. Like, sales of the game, in-game sales, or in-game ads) you have to pay $2
If its not a commercial project, then you can use it for free