The warrior Noh of the people of Ocom has awoken! She was chosen long ago to calm an angry deity wanting to wreak havoc on the lands in the distant future. Now that the time has come, she must build a sacrificial statue to allay his wrath. However, many years have gone by since the pinnacle of her civilization. The original artefacts are not to be found – she has to improvise! This proves harder than expected: The God is awake and angry and does not intend to be appeased…

Ocomoy is an asymmetrical 2 player versus game played locally on one computer. One player controls a warrior, using the keyboard. The other player uses the mouse to control a deity. The warrior has to find three items, while the deity tries to prohibit this by hitting the warrior with objects found in the world. Both also have access to special abilities, the warrior can acquire hers by praying at an altar, the deity will find special objects in the world.