>Sure for Animal Crossing and Harvest Moon
Does it even apply for those?
In Animal Crossing there are two battles, wasp and tarantulas. Both have something at stake with both a win and loss condition.
In Harvest Moon you also have a battle against limits. Most of them don't have any sort of enemy units, but you do have tasks and you are doing them in a time limit where there is a failure condition (either running out of stamina or time), and in some cases there can be a big cost to failure (especially around harvesting crops right as the seasons change).
One game I think interesting to consider is Minecraft. There are three different takes.
* Normal (with Easy and Hard included) which has enemy mobs you must fight against and environmental traps.
* Peaceful, where there are no enemy mobs but environmental traps still pose a risk (though less of one).
* Creative, where you are fully immune even to lava or falling.
Each step down is progressively more relaxing as it removes even more conflicts from the equation. But even in creative, you can still have a conflict with the game rules or within yourself (consider someone trying to design some redstone contraption and getting frustrated that their design isn't functioning correctly).
I'm drawn to thinking about the following web comic on conflict in literature and how it parallels the different conflicts and battles that can occur in games and how some of these might not be possible to remove.
https://2.bp.blogspot.com/-FWszluTZTpM/U310wQoCMWI/AAAAAAAAE...