Hello everyone, nice to welcome you on our site, this page even has Level 3 answers. I enjoy it =D
Level 3 - EPOREN
The answer to this puzzle is:
Words: REOPEN, PEREON, PREEN, PONE, PEON, REPO, PEEN, PORN, PERE, NEEP, ERNE, ROE, NEE, PEN, NOR, PEE, REP, ONE, ERE, EON
Bonus words:
REOPEN, PEREON, PREEN, PONE, PEON, REPO, PEEN, PORN, PERE, NEEP, ERNE, ROE, NEE, PEN, NOR, PEE, REP, ONE, ERE, EON