NEVER WORTH BUILDING IN A COMPETITIVE GAME ARM: Warrior, Podger, Zipper (Use flashes instead), Shooter, Infiltrator, Triton, Luger, Penetrator, ARM Hovercraft (Build Pelicans instead), Vulcan CORE: A.K., Spoiler, Pyro, Parasite, Croc, Mobile Artillery, Neutron, Buzzsaw (A lot better than a Vulcan, but still rubbish) RARELY WORTH BUILDING ARM: Jethro, Large Numbers of Freedom Fighters (1 or 2 can be used effectively on some maps and are worth building at times), Hulk, Zues, Marky, Spider, Bulldog (Panthers are usually better), Seer, Ranger, Millenium (Go with Crusaders or Conquerors instead), LLT, Ambusher (Guardian is usually better), Torpedo Launcher (Crusader is usually better), Annihilator, EMP Missles (Only useful for flooding/wasting enemy anti-nukes), Moho Metal Extractor (Fusions + Moho Metal Makers are more efficient on normal maps, normal Metal Extractors slightly more efficient on metal maps), Underwater Fusion Plant (Too expensive for energy given), Air Repair Pad, Energy Storage, Cloakable Fusion Reactor (Extremely inefficient energy source when cloaked, use normal fusions in most cases) CORE: Avenger (ARM's Freedom Fighter will eat these up), Envoy, Gimp, Necro (Mildly useful, but hard to use and not very effective), Informer, Missle Frigate, Leviathan, CORE Hovercraft - (Marginally useful in some cases, but only build the Snapper and/or Slinger), Voodoo, Krogoth (Only useful very late in an even game, when you're hitting unit limit and have metal to burn), LLT, Toaster (Punisher is usually better), Anti-nuke Silo (Bugged and occasionally does not fire; use Mobile Anti-Nuke instead), Torpedo Launcher (Enforcer is usually better), Doomsday Machine, Immolator (A bit pricey metal-wise, but can be effective at times), Moho Metal Extractor (Fusions + Moho Metal Makers are more efficient on normal maps, normal Metal Extractors slightly more efficient on metal maps), Viper (Gatt Guns are usually better), Underwater Fusion Plant (Too expensive for energy given), Air Repair Pad, Energy Storage, Sumo, Crasher (Slasher is a superior missle unit), Leveler (Slow, low armor, and expensive), Freaker (Usually too hard to raid by the time you have a level 2 plant, slow to build), Cloakable Fusion Reactor (Extremely inefficient energy source when cloaked, use normal fusions in most cases), Reaper (Build Goliaths instead) ARM's biggest advantages over CORE: Maverick (Hits very hard, no equivalent), Fibber (Can make subs nearly invisible), Pelican (Very effective amphibious unit, hard to take out with missles), Flash (unmatched for early game raiding and harrasment), FARK (Can fit twice as many FARKs around an Adv. Aircraft Plant compared to Adv. Construction Vehicles), Hawk (Superior to the Vamp by a bit, but especially more useful because of FARKs), Big Bertha (Far more accurate than the Intimidator, BUT does have less range so isn't ALWAYS better) CORE's biggest advantages over ARM: Goliath (Powerful and durable, no equivalent), Morty (Good ranged attack to destroy bases from a distance, no equivalent), Shadow (Stronger and a larger payload than ARM's bomber), Sea Units in General (Most CORE sea units are superior to their ARM equivalents), Slasher (Can shoot over wreckage that a Samson cannot), Storm (Fires faster than a Rocko), Rapier (Not alays useful, but can be quite deadly; decent at killing Pelicans as well)