Couple thoughts: Other factors contributing to snowballing: Promotion feature--this makes it very hard to fight back even if you have equal numbers. This is especially true if there are healers, which aren't much a factor in this alpha but have been in the past.  Weak defensive building--I think this is the biggest factor in the current alpha. The current alpha has weak defensive buildings. As a result, players have a more difficult time going back to their safe space to regain strength. Cav dominance--cav are the dominate meta for a lot of reasons. But it's difficult to repop with cav because of cost, slow train times, and the likelihood of continued harassment.  I would focus efforts on mitigating the factors that contribute to snowballing.  You're right that it has a snowball effect but I don't find it to be problematic. This seems to be one of things where the advantage is earned. It is also most pronounced in early/mid game, which I am fine with since it is hard to kill a CC before p3.  I don't find this a problem at all. It's relatively low numbers. (I actually think loot should be a bigger part of the game) Agree. Without commenting on the merits of these two, I think these are entirely separate proposals that may or may not have some impact on snowballing. You should also consider that, while these will be available to defending players, they will also be available to attacking players, so the snowball effect may become greater with them too. 

I'd like to revisit this topic to see if there are some ways to limit snowballing. Obviously, if you gain the advantage, it's rightfully yours, but the opponent should have more opportunities to win it back. And I think there would be more  fun/creative play by increasing these opportunities. Here are some mechanisms that contribute to snowballing: Citizen soldiers: This means that gaining a military advantage is often accompanied by a proportional economic advantage. Also, by training economy units from military buildings (and military units from the CC), the military infrastructure is largely the economic infrastructure, and vice-versa. Loot: Resource and experience loot leave the victor with a military and economic advantage. However, promoted units are somewhat slower to gather, which partially counteracts the other advantages. There are other features that could arguably contribute to snowballing as well, like preventing construction with ranged units, but these contribute much less. Ideas to reduce snowballing: Unit diversification and counters: by implementing more sophisticated relationships between the units, we can decrease snowballing by allowing smaller armies to beat larger ones if they have a better composition. we will need to vary more factors that are often held constant for whole unit classes in 0ad, like price, train time, and HP. Shift economic contributions more towards civilians (formerly women): This would benefit 0ad by partially deblurring the line between military investment and economic investment, and by decreasing the economic opportunity cost of sending citizen soldier (CS) units to battle. Alternatively, a new eco unit could be introduced to complement civilian gathering abilities, such as a more metal/stone specialized gatherer. Unit-specific technology tree: By providing players ways to selectively buff particular units, strategy will emerge in the prioritization of "teching into" certain units based on the civ matchup, map, and resource availability. Developments in this area will compound nicely with unit diversification. feel free to comment some thoughts and suggestions.

You can already do this. In a skirmish or random map, just set the civs of all desired players to the same one, and put them all on a team, then select Lock Teams.

UPDATE: Version 0.11.0 Added calendar (bonuses to gathering speed depending on the season and month of the year) A separate bot with support for new features has been added to the mod ( bot PETRA Expert Volatile Market) More details in the first post

Previously, I tried to make an AI player much larger, like increasing the population limit, making them build more clusters of buildings in different places to simulate an empire with multiple cities, but I could only modify the C++ files by changing a few values. I'm not even a programmer; modifying JavaScript files is beyond my capabilities.