Fangame sprites allowed in TSR?

[puggsoy]

I think the general answer would be yes. There are rips on the site of fan-games such as Rockman 7 FC, and even ROM hacks like Wario Land 3 (Pirate).

So I don't see a reason why not. If the creator of the game is a member of tSR, you might want to check if they're submitting them first, but otherwise it should be fine.