The 30-year old had his debut delayed due to his work permit which was obtained last week according to CEO Nana Yaw Amponsah.
Gama joined the Porcupine Warriors in October on a free transfer.
Interim coach Johnson Smith introduced Gama in the 85th minute when Kotoko were leading after Kwame Poku scored the opener at the Akoon park.
Medeama were awarded a late penalty which was converted by former Kotoko striker Abass Mohammed, after Defender Habib Mohammed handled the ball inside the 18-yard box.
By: Mohammed Bushran/@Bushran233