358 is a computer game which enables to play card game 3-5-8 with two computer opponents.
Detailed game rules you can find in https://en.wikipedia.org/wiki/3-5-8

The game is known also as "Sergeant major". The objective is to win as many tricks as possible.
The players deals clockwise, and the dealer selects based on his 6 cards the suit (each only once).
Dealers target is to get 8 tricks, next player 5, next 3. Every trick over target is a plus point.