Tower defense assets -
4 canons - canon, machine gunner, lazer and rocket launcher - gun heads are seperate to body for animation eg, spinning around, targetting, following and shooting enemy.
Comes with polygon path pieces and tower bases, plus polygon upgrades (see example) which when placed behind left, behind middle and behind right, These upgrades link onto the towers base, they could be used as -
proximity which enlarges your shooting area,
speed of ammunition
and or strength of weapon,
one tower could have 1 or all three of these upgrades or with correct placement, you might be able to upgrade multiple towers nearby if touching.
up grades could have a marker on them or just as easy enough just to colour code them.
raw and untextured
made with google sketch up
check out my other tower defense related assets here on my page.
free for any use, if used please send me a link to it, would love to see then animated, textured and working in an actual game.