Test played with my friends last night the same versus scenario I presented. Both were just 1v1 games. First, the two of us received three tiles each to build a map from the location deck at random, putting the first two tiles of his and mine with arrow-sides together, as exactly done in Belly of the Beast setup. Then we rolled an attack die till one of us got a Gear symbol. The winner selects his COG as usual, and then opponent selects from remaining three. Then Locust cards are presented for choosing, exempting Berserker (not playable). Those cards that use the same figurine are paired together, and when chosen the player must declare which he will use for the match exclusively (i.e. Wretch or Lambent Wretch, Kantus or Skorge [limit 1 Kantus figurine], Boomer or Grinder). Winner chooses first Locust he wants, and opponent chooses the next Locust, until none are left. This makes 1 COG and 3 Locust cards for each player. Then both sides collect their AI cards for their Locusts and their figurines. Each player then shuffles their cards and keeps their own AI decks. They trigger their own AI decks at end of turn, spawning alongside their COG rather than their opponent. The objective is to kill the opposing COG to win. No other AI cards are added to these decks, and any AI cards that say would affect a COG must instead affect enemy Locusts as if they were COGs. Each COG is placed on his entrance tile. The winner of the die roll goes first.
Dig In works with allied Locusts; the extra defense die disappears on YOUR next order step (it stays for one complete round). Sit-Tight only acts as card draw; ignore its Locust AI step that it deactivates.
COGs may be chainsawed. COGs may be interuppted by their opponent via a Guard attack action.
If a Kantus would resurrect an ammo token of your opponent's (i.e. they just got a figure back against you), then you may resolve its Otherwise ability instead. Be sure to acknowledge if the Locust you have chosen drops a weapon or not (ex. Grinders do not).
Play each COG in 1v1 with solo play rules.
This version is also capable of 2v2. Follow regular multi-player rules.
Any other rules to be added use at your own judgment.
I played a second time with another friend on a smaller map (2 location cards for each). I preferred the second way, though he wished for a larger map like the first game. My problem with the larger one is it slows the game down a lot and has potential for opponents to really run further away, dragging the game on.
Lastly, my friends said they both enjoyed it (one saying it was obsolete to regular game). He further said he would like to see Capture the Flag using the lock tokens, 3 and 4 player battle-royal, and King of the Hill match with the Berserker on the hill. I will try to make variants for these in the future.