[[caption-width-right:316:Just decorating the tunnels with a [[BloodyHilarious nice deep red colour]]...]]

''Liero'' is a freeware 2D shooting game by Finnish programmer Joosa Riekkinen. It can be best described as ''VideoGame/{{Worms}}'' in real time. The original was discontinued after the loss of the source code in a hard drive crash, but several remakes and clones with more features have been made, with the most popular being ''Liero Xtreme''.


* AIRoulette: The AI is ''entirely'' random. Even in tweak programs, the only things that can be changed about the AI are its actions' probabilities. Needless to say, it was pretty dumb. Worse yet it can force you to have to quit.
* AttackReflector: The Fan can blow enemy projectiles back to the sender, depending on direction you aim it.
* AwesomeButImpractical: Big nukes are incredibly deadly, but their fuse time makes it extremely easy to run away when playing on a non-random map.
** Bouncy weapons in general, with the arguable exceptions of zimm and bouncy larpa.
* BilingualBonus: Take a guess what Liero means in Finnish. [[spoiler:Earthworm]].
* BoobyTrap: One of the available weapons, disguised as a weapon/health crate.
* DeathFromAbove: Larpas leave behind a lot of falling shrapnels that can be used that way.
* FrickinLaserBeams: That behave rather like actual lasers, being hitscan and unaffected by gravity.
* GatlingGood: Minigun.
* HighPressureBlood: which can be normally maxed out at 400% of normal in version 1.33, and mods can push this over ''1000%''.
* HoistByHisOwnPetard: Players can do this very often, especially if not careful when handling powerful weapons.
* JokeWeapon: [=RB=] Rampage, an SMG firing incredibly weak rubber bullets. (Three clips are required to kill a worm).
-->'''Anonymous, [[http://www.liero.org.pl/forum/index.php?page=9#RbRampage liero.org.pl]] (about this weapon's strong points)''': Buhahahahaaaa!!! Funny?
* KillItWithFire: Napalm, flamer.
* LethalJokeWeapon: There's a few that fit:
** The Fan. In a fashion akin to the [[VideoGame/TeamFortress2 Pyro's Airblast]], you can blow aside all projectiles with mass.
** The Dirtball and Greenball. While they don't do damage in themselves, they can block explosions and be used to trap opponents in a tight spot and corner them with buried explosives.
* LudicrousGibs: Worms in this game splatter quite messily when killed.
* MagneticWeapons: Gauss Gun.
* MatryoshkaObject: The Grasshopper explodes into another similar looking bomb, which then explodes into another one, and into another again. This gives it the impression of "hopping" around.
* MoreDakka: Several weapons allow you to simply spray bullets at high speed. The Uzi, Chaingun, and Minigun in particular allow you to spam ammunition rapidly.
** You can also set the reloading times for all weapons to 0%. This makes all single-shot weapons this.
* NukeEm: The Big and Mini Nuke weapons.
* OverdrawnAtTheBloodBank: Wounded worms bleed continuously and endlessly. Just wait a bit, and soon they will have bled more blood than they can possibly have!
* PlayerGuidedMissile: [[ExactlyWhatItSaysOnTheTin Missile.]]
* PoisonMushroom: There's a BoobyTrap weapon disguised as a weapon/health crate.
* RecoilBoost: Several weapons have a recoil effect when used. If weapon reload time is set to zero, you can get some rather interesting results, especially with the Gauss Gun.
* ShotgunsAreJustBetter: Two, both are decent weapons.
* {{Shoutout}}: The ''Chiquita Bomb'' is a reference to the Banana Bomb from VideoGame/{{Worms}}.
* StuffBlowingUp: Many weapons have explosive effects.
* TheresNoKillLikeOverkill: Some of the weapons produce utterly ''thorough'' barrages of explosions and shrapnel. The aptly-named Hellraider explodes repeatedly as it launches, before detonating and spraying cannonballs everywhere, and these cannonballs can produce even more shrapnel. The Larpa and ''Bouncy'' Larpa leave trails of shrapnel behind as they fly.
** Step 1, 0% reload. Step 2, chiquita bomb spam.