$ will increase money income by 10 * number of $s bought. Soldier will spawn 10 soldier units, this costs 100 money. Can be killed by the environment. Minigun soldier will spawn 5 heavy units, this costs 150 money. Can be killed by the environment. Tank will spawn a single tank unit, this costs 175 money. Powerups can spawn which give you either tear gas or missile. Tear gas will stop any enemy units that touch it, it can be destroyed by a missile. Missile will ask for a missile to drop onto the battlefield, however the missile is random and can kill friendly units and tear gas drops.
