It's playable on PC or Mac and it's completely free.
What is DeltaRune? (Full Theory) Don't Forget. : r/Undertale
Deltarune Chapter 2: How to Beat The Secret Boss
Deltarune is a game about playing, and it's bloody brilliant
Dorky art and blogging ahoy!. — Deltarune Theory: Who Spoke to
Deltarune's Next Installment Will Be The Full Game - Cultured Vultures
deltaruneのTwitterイラスト検索結果(古い順)。
Deltarune - Wikipedia
Undertale Creator Releases Deltarune, A New Surprise Free Game
Ralsei Deltarune Nendoroid release date, photos, pre-orders
Undertale Creator Gives New Details on the Sequel, Deltarune
Undertale on Steam
Deltarune Will Now Launch Much Sooner Than Expected
Jeu vidéo indépendant — Wikipédia
Toby Fox says there's one area to go before Deltarune Chapter 3