Always make at least one "Relief Rail" to each station. While one train travels down the first another from the destination can travel along the Relief Rail.
Tip: If you've playesd this before and know you'll have trouble in the later levels of each course, do the time trials first. Rate up or down if you want. But doing the time trials first gives you more points allowing you to unlock vehicles faster.
I have a theory about the Creeper World Series. In Creeper World 2 you can make emitters teleport to another universe, therefore making Creeper World 1 start in that universe, forcing the inhabitants to advance in technology to carry out the events of Creeper World 2. In conclusion it is a never ending cycle in which Creeper World 2 causes Creeper World 1 in another universe.
*Demoralizes enemy as arty falls on them* Even when they surrender...*Puts on sunglasses*...They get blown to bits. Hamgurgers anyone? Made from dead people and completely free.
Ok we'll assualt as the enemy fires their arty....... *Runs out as riencofrcements choke fomr poison strikes on the trench* General: "Was that supposed to happen?"