Riverhillsoft (リバーヒルソフト, Ribāhiru Sofuto) was a Japanese video game manufacturer in operation from 1982 to 2004.

Their ports to the Japanese NEC PC-9801 and PC Engine CD platforms featured improved graphics (introducing the Prince's classic "turban and vest" appearance) and a new Red Book audio soundtrack.

Their final release was the life simulation game World Neverland: Waneba Island for the PlayStation in 2000.

[2][3] Following layoffs in 2000, the company turned its focus on mobile gaming, which proved unsuccessful.

In June 2004, it filed for bankruptcy and the majority of its employees left to form a new company, called Althi, Inc., absorbing Riverhillsoft.