Hello, mangaman, you wrote: _>> it is too fuzzy. First of all - on what the client? What for a genre? How many players on a location (and how they are organized)? What requirements to the server on the physicist and AI? M> the Client on SDL2) On With ++. These are races with the top view. Now 4, on idea it would be desirable players to 16. On idea, on the server it is necessary checks on reliability of the data from the client. Physics there simple, not "present". Between races a chat, rooms of clans, shop of spare parts, the best results and . The game server (or a little such) is better for separating from a lobby, chats, etc. and so, steamcraft in wrote the grid on . All physics on the client, therefore safety any, but online on the game server turns out big. A exchange to make easily. M> but as a whole, generally it would be desirable to study a subject, to look who as on what writes that in the future desires to invent the bicycles. A low-level grid rarely now write. In the core because of plans on scaling.