It needs some voices. I kept wanting the bot heads to make oofs and dents when they hit a wall or floor hard. Or maybe the factory A.I. telling it to Give Up, Robot.
Rebuild 1 & 2 are an excellent game. I have a few tweeks to suggest if you continue the series.
Scouting - Chance to kill 1 or 2 zombies. Odds improve with good offense.
Keep track of 'scrap' for building alterations & fortifying. 'Medicine' as a lootable commodity.
once you reach the edge of the map, allow missions outside of the city - for survivors, trading goods, equipment, or just zombie killing experience (might weaken future hordes)
if a square is entirely surrounded by fortified squares and is zombie-free, just add it without spending time building.
option "distract zombies" - a mission that encourages zombies to leave the current square and move to an adjacent square. for tactical types.
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