Traps are what clash-likes call 1-shot defenses. They’re not all that exciting. The most interesting thing is how they don’t count as buildings for percent destroyed or gaining manna. The basic trap is a 1×1 landmine. Many clash-likes don’t use traps at all — what’s the point of a defense that destroys itself? But if you’re going to have them in your game, you may as well think about what kinds.
We have a few types of traps aimed at big, tough troops. The huge 2×2 bomb is obvious. The 1×1 “kill X points of troops” trap is sneakier. It has no radius, and goes off all at once, so almost always hits 1 thing, hopefully something big. It hardy seems worth having. If your game has human and machine troops, you get to use an anti-tank mine which only tanks trigger. That gives weak humans a little boost, so is nice.
For some fun traps, a spring can launch troops a few spaces away. People enjoy these, including picking the direction. Area freeze traps are fun — frozen troops being shot at looks neat and feels clever. A variant is the distraction trap — something tough pops up that nearby enemies must stop to kill.
The last interesting trap is a “kills X” which lasts until it’s used up. Maybe a pit. They’re obviously strong, but there’s not as much element of luck. Still, it’s cool having more and more troops vanish into it.
Visible traps work much better than one would think. They can discourage attacks from a weak side. A fun thing is having area-affect spells also explode visible traps, giving attackers an option waste a spell on trap-clearing. You also don’t need to worry about someone unfairly learning where your visible traps are, a problem with hidden traps.
The most oddball thing about traps is needing to hand-reset them. That seems insane since destroyed buildings come back for free. But it’s done. I think the main reason was sending a notice — “you’ve been attacked. Log in to reset your traps”. A game sending you a phone notice was cool back then. But people got sick of it a long time ago. We can safely have traps spring back to life along with everything else.
I’ve gotta say, Boom Beach-style traps are probably the best. You get a big pile of small bombs, visible, and one upgrade upgrades them all. Traps are fun to spread around, but how many types do we need?