Hello everyone, nice to welcome you on our site, this page even has Level 15 answers. I enjoy it =D
Level 15 - ADEGNGE
The answer to this puzzle is:
Words: DEGAGE, GANGED, NAGGED, EGGED, GAGED, AGENE, AGEE, EGAD, GEED, AGED, GANE, GAED, DANG, GAGE, GAEN, DENE, GEE, ENG, NEE, GAD, GEN
Bonus words:
DEGAGE, GANGED, NAGGED, EGGED, GAGED, AGENE, AGEE, EGAD, GEED, AGED, GANE, GAED, DANG, GAGE, GAEN, DENE, GEE, ENG, NEE, GAD, GEN