本日でIb公開13周年になりました！
今からバースデーセールでSteam版「Ib」が30％OFFとなっております。
https://store.steampowered.com/app/1901370/Ib/

Today is Ib's 13th anniversary
The Steam version of "Ib" is currently on sale for 30% OFF as a Birthday Sale.
https://store.steampowered.com/app/1901370/Ib/