Remember those times you played the narrative scenarios. Always the marines trying to escape from the invader's clutches. Well... how about marines trying to escape from the clutches of other marines? Normal scenario, except the 'invaders' instead use other marines. The deck serves as a timer, and the 'invader' marines can spawn with one of the 'tier 1' weapons.

If a 'marine' marine reaches halfway, the 'invader' marines can respawn with 'tier 2' weapons (sorry, plasma isn't allowed).

If the timer runs out, mark out where the furthest point the 'marine' marines managed to get to. Then switch sides and try to stop the other team from going further. If the 'marine' marines reached the finish, note how many cards are left in the invader deck. Switch sides and try to stop the opponents from finishing faster.

This is just bare ideas, and there's a lot of space for improvements, so post away for ideas.

Anyone playtest it?

Maybe if a marine (of either team) dies, it must wait 1 turn before respawning. This should stop some marines from just pushing forward, or the invader marines from spawning non-stop with big guns.

Also, if you respawn you must respawn 8 spaces AWAY from the finish if you're the 'marine' marine, and 'invader' marines must respawn 8 spaces away from any marine, and both teams must respawn out of LOS from the other team.

In the starting room, none of the 'invader' marines are on the board, and the timer deck doesn't start ticking. Only after the first room is revealed do the 'invader' marines spawn and the deck start counting down.

Come on, anyone tried this? Remember there are still a lot of space for improvement.

Sounds like a possible fun idea, but my players just want to play story based standard maps against the nasty demons. Never played much of the marine vs marine stuff so sorry I can't give you feedback on how it plays...