If you don't know colosseum, read this:
You have an old coot and he is in an area with some units.
When you go to the units you get one of them automatically - every second.
After that you fight vs. other players in the fighting area with your chosen units.
You can choose another unit when you have 100, 200, 300 or 500 kills. 1000 kills for mercenarys, 1500 for lazer bear and 2500 for a monstertruck.
However this version has 3 new features and a new map:
-first shop in a colosseum
-you can switch the level
-comps can play (only in "SH colosseum v3", "SH colosseum comps better" and the "SH colosseum expert comps" version)
-upgrade units (only in "SH colosseum v2" and "SH colosseum v3" but it is unbalanced)
You´ll get the following files:
-SH colosseum 2
-SH colosseum 3
-SH colosseum comps better
-SH colosseum expert comps