Nothingness: it looks very powerfull, because is movable, but it inspires me to implement radar. It would have this actions actions: 1. move or just stand, in this case it cant see like other normal pieces. 2. eject aerial (cost one turn - in notation it is marked). With ejected aerial are two ather actions available - scan - to see, say,two pieces in all directions (cost one turn, noticed in notation) or plug-in aerial (cost one turn, noticed in notation). With ejected aerial radar cant move. Radar has not passive watching like spy has - it cant see enemy when dont scanning. Radar is very vulnerable and can be destroyed by all other pieces. "Moving" radar can destroy sappers, spies, radar and HQ.

lukulus:

I like the radar piece (and I think you defined it well), but, unless I am missing something, it seems to lend itself to helping a passive player.  In other words, is there a better use of radar than putting it in the front  or second row and using the aerial on Move 1 and leaving it there? 

I think this game, as defined, is played optimally in a defensive posture and any modifications to the rules should be made to benefit the aggressor. 

That said, I wouldn't mind seeing a radar piece added if other additions favorable to the attacker were made simultaneously.

happy hermit: may be it is because I am very passive player:) I see your point, but I think it could be very danger if radar is in midst of attack - with ejected aerial it cant move so it blocks own forces and using scan action costs time. May be there would be rule, that after 4 moves w/o action aerial automatically plug in and it cost one turn or so,but it llooks a bit complicated.

For attacking players there shold be parrachutist. It can move by two fields, also jump over vulcano (not ash at all:) and other stones. If landed on occupied field fight will start, if parrachutist win or if field is unoccupied, parrachutist also see all adjusted fields. Move restrictions - parrachutist can move by 2 fields every turn, but jump over occupied field once in two turns. Also after moving by two fields parrachutist is revealed.

lukulus: Do I understand it correctly that “rejecting an aerial” is a response of sorts to an aerial ejected by the opponent, preventing the effect of the opponent's aerial?

Pedro Martínez: it was one of my fault in English:) It would be plug in instead. Both players can eject aerial in same time.

lukulus: OK, got it. I would use “apply” or “use” instead of “plug in,” but it's just me being me there. :) However, the idea of volcano ash should be taken up! Maybe it can be used to shoot down the skydivers…