ok, imagine that you have a 1x1 grid surrounded by unwalkable ground. how to get more than 1 unit into this 1x1 grid ? i know that you can just create a crystal (& another unit was allready there) & it will work, but how about 2 marines on 1x1 grid for example ?
one way i can think of thats simple, is create some burrowable units on it?
I couldn't find the map I was looking for (don't remember the name) but here's another one I made that shows the same concept.
Imagine if you had a 2x1 area instead of 1x1. On one tile you make a unit and then a powerup, the unit will be forced to find a new place to stand, and will move to the other tile. Once he does that, repeat the process. In this way you can stack many units in roughly the same spot.
The only problem is, once you stack some unit, they will want to move around, so you need a way to keep them still (or maybe not) In this map I made used tanks and made them go into siege mode when they stack. Another way is to move them to unwalkable ground.
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Yep, the best way is to do that crystal thing and then the following; Have a constant "move to unwalkable ground" trigger which (only) effects the units in the 1x1 grid you want to keep them. The trigger will prevent them from moving while move units keep walking into the 1x1 Tile of Terror (sorry

).
i just saw a map, there were 2 kerrigans on one 1x1 grid & no crystal thing.
will this idea work:
1.create a unit in this grid
2.create a powerup in this grid
3.mave a SCMDraft2 location on the center of this grid, that's smaller than this grid (0.7x0.7 for example)
4.when the unit will walk around trying to moove away from powerup, he will leave the 0.7x0.7 location & then remoove the powerup & create/moove the second unit there
so could this work in theory ?
QUOTE
so could this work in theory ?
That would work, but there's no telling how long it would take for the unit to actually leave the location, you'd just have to wait for it.
There's another way to stack units too,
here is the tutorial about it.