Here are all the answers to Wordscapes Level 631 in the Cover pack, Autumn group. The letters that players must unscramble in this level are RIAUNF. This puzzle has 13 words as its answer and 19 bonus words.
ain, air, airn, ani, arf, fain, faun, fiar, firn, furan, infra, naif, nairu, rai, rani, ria, rif, rin, unai.