Starter Weapons
Frying Pan: 20/6 damage max
Gas Grenade: Theoretically you would do 150 damage max (150 individual gases doing 1 dmg each) but since wind near 100 power and bouncy walls are required to do the max damage, you would only do 30 max on normal circumstances.
Mortar: 46/54 damage max (10/12 damage on the initial shot, followed by 12/14 dmg each on the 3 shots that pop up after)
Repeater: 24/30 damage max (6 shots doing 4/5 dmg each)
Roman Candle: 29/38 damage max (5/6 dmg on initial shot, 3/4 dmg each on the 8 shots that pop up after)
Shotgun: 24/32 damage max (8 shots doing 3/4 dmg each)
Splurge Gun: 20/24 damage max
The Old Boot: 24/29 damage max
Throwing Knife: 18/22 damage max
Grenade: 20/24 damage max
Bazooka: 15/18 damage max
Air Strike: 22/26 damage max
Assault Rifle: 25/30 damage max (5 shots doing 5/6 dmg each)
Bouncer: 18/22 damage max
Bow: 22/26 damage max
Cluster Grenade: 35/42 damage max (10/12 dmg on initial explosion, 5/6 dmg each on the 5 shots that pop up after)
Dirt Bomb: No damage on either user or opponent
Double Trouble: 30/36 damage max (2 shots doing 15/18 damage each)
Dynamite: 25/30 damage max
Egg-Seeking Missile: 15/18 damage max
Unlockable Weapons
Multi-Missle: 30 damage max (15 shots doing 2 dmg each) Unlocked at level 3
Big-Boom: 20/24 damage max Unlocked at level 6
Sniper Rifle: 20/24 damage max Unlocked at level 10
Spray 'n' Pray: 32/40 damage max (8 shots doing 4/5 dmg each) Unlocked at level 13
Triple-X: 36/42 damage max (3 shots doing 12/14 dmg each) Unlocked at level 17
Health Potion: Gives up to 20/24 HP to any person it hits (person cannot heal more than its maximum HP) If egg is poisoned, burned or frozen, then it will heal the HP and get rid of the after effects. Unlocked at level 19
Vortex Equaliser: 30/40 damage max (10 vortices doing 3/4 dmg each) Unlocked at level 21
Multi-Bouncer: 30 damage max (15 balls doing 2 dmg each) Unlocked at level 23
Teleport: Does not damage, lets you teleport to any spot Unlocked at level 26
Chain Gun: 30/40 damage max (10 bullets doing 3/4 dmg each) Unlocked at level 28
Raspberry: 28/34 damage max Unlocked at level 30
Taser: 25/8 damage max Unlocked at level 32
Homing Cluster Grenade: 35/42 damage max (10/11 dmg on the initial explosion, plus 5/6 dmg max for the 5 shots that pop up after) Unlocked at level 34
Crescent Moon: 34/42 damage max (6/7 dmg on initial shot, followed by 7 shots doing 4/5 damage each) Unlocked at level 36
Bring the Rain: 50/60 damage max (10/12 dmg on the initial shot, followed by 8 shots doing 5/6 damage each) Unlocked at level 38
Sonic Boom: 40/50 damage max (10 explosions doing 4/5 dmg each) Unlocked at level 40
Grenade Launcher: 50/62 damage max (10/12 dmg on the initial explosion, followed by 5 small grenades doing 8/10 dmg each) Unlocked at level 42
Whirlygig: 50/62 damage max (10/12 dmg on the initial shot, followed by 10 shots doing 4/5 dmg each) Unlocked at level 45
Death from Above: 45/54 damage max (3 shots doing 15/18 dmg each) Unlocked at level 47
Sidewinder: 50/60 damage max (10/12 dmg on the initial shot, if you hit space, then it's followed by 2 shots doing 20/24 dmg each) Unlocked at level 49
Weapon Pack 1 weapons
Atomiser: 18/22 damage
Health Injection: Gives up to 20/24 HP to any person it hits (person cannot heal more than its maximum HP, and it has to stay on the air long enough according to Mageg, you can't hit it on yourself with a very low or no altitude) If egg is poisoned, burned or frozen, then it will heal the HP and get rid of the after effects.
Lightning Gun:
Starting from Version 1.0.0.2 (current damage): 24/32 damage max (8 shots doing 3/4 dmg each)
Triple Throwing Knives: 36/42 damage max (3 shots doing 12/14 dmg each)
Windup Penguin: 26/31 damage max
Weapon Pack 2 weapons
Fire Rocket: 25/27 damage max (10/12 damage from the initial shot, plus 5 damage for 3 turns) Gas damage after initial shot does not stack with the same weapon, but with Poison Grenade it does.
Inflatable Elephant: Theoretically you would do 50/62 damage max (with 10/12 dmg on the initial shot, and 10 stars doing 4/5 dmg each) but since the stars spread out after the elephant explodes, you may only be able to do this on a closed area with the elephant right on top of the enemy. Expect <25 damage.
Mass Teleport: No damage, teleports everyone on the field into random areas.
Poison Grenade: 30/32 damage max (10/12 damage on the initial explosion, plus 4 dmg for 5 turns) Gas damage after initial shot does not stack with same weapon, but with Fire Rocket it does.
RPG:
Starting from Version 1.0.0.9 (current damage): 44/54 damage max (20/24 from the initial gnome, 4/5 dmg on each of the 6 shots that pop up after)
Weapon Pack 3 weapons
All the King's Men: 35/40 damage max (5 shots doing 7/8 dmg each)
Blunder Bouncer: 37/46 damage max (5/6 dmg on the initial shot, 4/5 dmg on each of the 8 shots that pop up after)
Driller: 30/40 damage max (10 shots doing 3/4 damage each) Unlike the previous game, driller can only do the max damage on flat ground.
Falling Elephants: Theoretically you would do 54/63 damage max (with 9 elephants doing 6/7 damage each) but since the shots are spread out, expect around 30 damage.
Flamethrower:
Starting from Version 1.0.0.2 (current damage): 35/39 damage max (with 4 shots doing 5/6 dmg each, plus 5 dmg for 3 turns afterwards)
Weapon Pack 4 weapons
Boxing Glove: 22/7 damage max
Chicken of DOOM: 28/34 damage max
Circle of Death: 34/44 damage max (10/12 damage on the initial shot, 3/4 dmg on each of the 8 shots after the initial shot)
Rain-Bow: 35/42 damage max (7 shots doing 5/6 damage each)
Wall: No damage, creates a vertical wall from the target or area that it hit
Weapon Pack 5 weapons
Frozen Dynamite: 20 damage max
Multiplier: 45/60 damage max (15 balls doing 3/4 damage each)
Rail Gun: 30/36 damage max (requires bouncy/looping walls to do max, otherwise only 15/18 damage)
Switcher: 15/18 damage
Napalm Nade: 40/41 damage max (10/11 damage on the initial shot, followed by 15 shots doing 1 dmg each and 5 dmg for 3 turns)
Weapon Pack 6 weapons
Napalm Strike: 35 damage max (20 shots doing 1 dmg each, followed by 5 damage for 3 turns) Requires wind and bouncy walls to do max damage.
Ice Bow: 24/29 damage max
Robot Panda: 35/42 damage max (10/12 damage on the initial shot, followed by 5 shots doing 5/6 dmg each)
Splurge Grenade: 55/72 damage max (10/12 damage on the initial shot, followed by 15 shots doing 3/4 dmg each)
Turret: 35/36 damage max (30 shots doing 1 dmg each, plus the explosion from turret which is 5/6 dmg)
Weapon Pack 7 weapons
Blueberry: 40/50 damage max (5 bounces doing 8/10 dmg max)
Cherry Bomb: Theoretically you would do 48/60 damage max (12 explosions doing 4/5 dmg max), but since the shots are spread out, expect around 30 damage.
Gooseberry: 40/48 damage max (Base damage without bounce is 5/6, shot increases by 5/6 dmg with each bounce, can bounce 7 times max)
Grapes of Wrath: 40/50 damage max (10 shots doing 4/5 dmg each)
Pineapple: 38/50 damage max (8/10 dmg on the initial shot, followed by 10 shots doing 3/4 dmg each)
Weapon Pack 8 weapons
Paper Plane Bomber: 50/62 damage max (Plane does 10/12 damage max, followed by 5 bombs doing 8/10 damage each)
Devil's Hand: 48/60 damage max (8/10 damage on the initial shot, followed by 10 small bombs doing 4/5 damage each)
Ghost Bow: 54/66 damage max (requires looping walls, near 100 wind and low gravity to do max damage, otherwise only 18/22 damage max)
Rocket Slam: 35/42 damage max (10/12 damage for the initial shot, followed by 25/30 damage max for the rocket slamming down, requires timing to do full damage.)
Jumping Jack: 30/36 damage max (bounces 4 times, does 4/5 damage on first initial hit, followed by 5/6 after the first bounce, then 6/7 after the second, then 7/8 after the third, then 8/10 after the fourth.)
Weapon Pack 9 weapons
Magic Eightball: 36/43 damage max (8/10 damage for the initial shot, followed by 7 more bounces each being 1* less damage than the last bounce (7-6-5-4-3-2-1)/8-7-6-5-4-2-1)
Plasma Bouncer: 41/54 damage max (12 shots doing 3/4 damage each, followed by an explosion that does 5/6 damage max)
Arctic Barrage: Theoretically you would do 51/61 damage max (1 dmg from the initial shot, followed by 10 icicles that do 5/6 damage max) but since the icicles spread, expect around 30 damage.
RC Swarm: 32/40 damage max (8 shots doing 4/5 damage each)
Pickled Volley: 34 damage max (17 shots doing 2 damage each)