What is the kingdom? Elves? Humans? Demon sheep crossbreed (dont ask
)?
Here are some ideas for the gnomes:
Battle Tank: a large steam tank model, siege damage, slow attack and lousy range but good damage
Super Battle Tank:upgrade for above /|\, tinted black, little bigger, longer range, more damage
Gnomish Murader: a vehicle - looking thing of some kind lol
, with twin machine guns, giving it a rapid moderately damaging dual pierce attack
Memory of Gnomeragon: the sweet memory of the gnomes homeland, which is an absolutely horrendous tower; it does 1 damage every 5 seconds and has a 'sweet memories' aura that speeds up attack rate or nearby towers and builders
Land of the Gnomes: the upgrade for the above /|\ ; it is a very high end tower, firing streams of missles at land based enemies, doing huge amounts of damage very quickly, and fires rocket clusters (maybe barrage projectile model) at air based enemies, dealing extreme damage with large splash but long cooldown'
Fireworks Kit: LOL WHY NOT
a fireworks launcher that (obviously) targets air units; it can hit up to ten of them at a time, but does light damage
Ballistic Launchpad: this upgrade for the above /|\ launches unmanned gnomish flying machines at air units, dealing heavy damage; unfortunately, the projectiles are slow and miss often; fortunately, they deal splash so
Gnomish Airblaster: upgrade for the above /|\; it's a giant turret that blasts air units for devastating amounts of damage; it can stun them too
Crimson Skies: a gnomish radio tower; it has no air attack, but calls gnomish flying machines to drop bombs on the enemies, dealing utterly horrific (for the enemies) amounts of devastating damage with a huge splash damage and residual 3 second napalm fire; the cooldown is 15 seconds though, but this is still one of the best towers ever, obliberating large amounts of enemies; the trick is to fire where the enemies WILL be, because the bobms take 5 seconds to hit the ground
Hope this gives you some ideas
