Hello! We have made an update to the Q&A to clarify the rules around asset reuse.
It should hopefully now be more clear that:
- you are allowed to use assets you previously made.
- if you're remaking an existing game, you can use its assets as long as you have permission from the creator.
Keep in mind that games using new & original assets are likely to score higher in the "Originality" category, so we would still encourage you to use new assets! But if your heart is telling you to make a faithful port or revive a dead project from another platform, it is now possible to do so.