I try to rotate them abit. No matter how long a gap, when I swing back to wanting to get into some mp games I try to spread them out. Joining 5 at once means that 5 are likely to get time consuming all at the same time. If I can keep only one late game, one mid game, and one early game at the same time then Im happier. Those arent the same as early mid and late era's. They refer to the explore/expansion, research/buildup, and late game strategy phases. Besides which, since each of those play so differently even in the same game it helps to keep things exciting.
Another hint. At least for me I find it helpful to not play the same nation in too many games at the same time. Or even the same map. Younger minds might not have a problem with it but I find it more comfortable to have a clear idea of which game Im debating strategy on. Multiple games with too much similarity at the same time is slightly problematic.
