A board game mentioned in Wikipedia is the Yoruba divination game named Ifį, where instead of cowries palm nuts are used:

... The tray and tapper are used in Ifa divination, a central ritual within Yoruba religion. This tray, adorned with carved images and dusted with powder, serves as the template on which sacred signs (odu) related to the personal concerns of a diviner's client are traced as the point of departure for analysis. In contrast to those transitory signs, the more permanent backdrop of the carved motifs on the tapper and tray constitutes an artistic exegesis of the forces that shape human experience and the universal needs fulfilled by such quests for enlightenment.

To initiate the ritual, the babalawo places the tray in front of him and taps rhythmically on it with the pointed end of the tapper, invoking the presence of past diviners and of Ifa (also called Orun-mila) the god of divination as well as other Orisa.

There are a variety of palm nuts that are available, but only specific kinds may be used for Ifa divination and must have at least 3 'eyes' or more. The palm nuts are grouped in one hand, then the diviner attempts to shift them all to his/her other hand at once, and counts the remaining Ikin left, hopefully to discover that either one or two remain. (Odu, which are the foundation of the binary data, can only be marked with either one or two palm nuts, remaining in the diviner's original hand. As this process goes on, the diviner marks single or double marks in wood powder spread on his divination tray until he or she has created one of the 256 odus that are available.

Each of these odus is associated with a traditional set of Ese (verses), often relating to Yoruba mythology, which explain their divinatory meaning. These verses represent thousands of years of observation and are filled with predictions, and both mundane and spiritual prescriptions that resolve issues found in that Odu. Within Ifa, Believers find all the knowledge of the world past present and future.

After obtaining the Odu that governs a situation or event, the diviner then determines whether the Odu comes with Ire (which is poorly translated to mean good luck) or Ibi (which could be viewed as obstacles or impediments to success). After this process the diviner now determined appropriate offerings, spiritual disclipines and/or behavioral changes necessary to bring, keep or compel success for the person receiving divinatory counsel ... (Wikipedia)

The tray depicted has 4 turtles engraved on the border, and at the 'takurua position' (top center) we find two 'persons'. The central plane is delineated by 2 serpents (or rather one serpent with two heads).

In Norse mythology too, the border line was defined by a snake:

"Jörmungandr ['jœrmuŋgandr], alternately referred to as the Midgard Serpent or World Serpent, is a sea serpent of the Norse mythology, the middle child of the giantess Angrboša and the god Loki.

According to the Prose Edda, Odin took Loki's three children, Fenrisślfr, Hel and Jörmungandr. He tossed Jörmungandr into the great ocean that encircles Midgard. The serpent grew so big that he was able to surround the Earth and grasp his own tail, and as a result he earned the alternate name of the Midgard Serpent or World Serpent ..." (Wikipedia)