What is "hexplode"

Hexplode is a computer board game originally designed for the BBC Micro but since ported to many other platforms. The board comprises an array of 25 hexagonal cells. Its novel feature for a two-player alternate-turns game is that when the number of tokens in each cell reaches a critical threshold, the cell "hexplodes" such that the contents of the cell are equally distributed to each of the adjacent cells. This process can often generate a chain reaction which means that predicting the outcome of a turn is quite difficult for human players.