Hello everyone, nice to welcome you on our site, this page even has Level 15 answers. I enjoy it =D
Level 15 - RTTAEEH
The answer to this puzzle is:
Words: THEREAT, HEATER, AETHER, HATTER, REHEAT, HEREAT, HATER, ARETE, RATHE, TATER, THETA, TETRA, TART, TATE, TARE, EATH, HAET, RETE, RHEA, RATH, TEAT, THEE, HEAT, HARE, HEAR, HART, TREE, RATE, THAT, HATE, TEAR, HERE, THE, TEA, EAR, RAT, ART, EAT, ETA, ATT, TAR, HAT, ATE, ERE, HER, TEE, TAT, RAH, ARE, ERA
Bonus words:
THEREAT, HEATER, AETHER, HATTER, REHEAT, HEREAT, HATER, ARETE, RATHE, TATER, THETA, TETRA, TART, TATE, TARE, EATH, HAET, RETE, RHEA, RATH, TEAT, THEE, HEAT, HARE, HEAR, HART, TREE, RATE, THAT, HATE, TEAR, HERE, THE, TEA, EAR, RAT, ART, EAT, ETA, ATT, TAR, HAT, ATE, ERE, HER, TEE, TAT, RAH, ARE, ERA