Forgotten Worlds, titled Lost Worlds (Japanese: ロストワールド) in Japan, is a side-scrolling shoot-'em-up game by Capcom originally released as a coin-operated video game in 1988. It is notable for being the first title released by Capcom for their CP System arcade game hardware. The game took two years to develop, with a production budget of US$five million.

Forgotten Worlds, titled Lost Worlds (Japanese: ロストワールド) in Japan, is a side-scrolling shoot-'em-up game by Capcom originally released as a coin-operated video game in 1988. It is notable for being the first title released by Capcom for their CP System arcade game hardware. The game took two years to develop, with a production budget of US$five million.