Factorio

Adds a few harder enemies.

Improves the enemies tactics by using potential fields/pheromones allowing probing of defenses, retreats, reinforcements, counterattacking, breaching, raids, rallying death cry, and player hunting. Uses non-homing blockable biter projectiles. Adds new Enemies (disabled by default). Difficulty setting in mod options menu.

Adds new Enemies to the game. 5 new biters and 5 new spitters, each with their own unique strengths and weaknesses. If you want a more of a challenge than what Vanilla can offer you... Compatible with Rampant and Bob's. Recommended to use with NE Buildings

Biters now drop alien ore, which can be smelted into alien metal, which is the ingredient for alien items that are better than their vanilla counterparts. Also introduces Hyper-Modules which level up after killing a lot of Biters. The mod is compatible with Bobs Enemies, Rampant and Natural Evolution Enemies.

Dead aliens are now good aliens! Aliens will pay for your base defense! On their death, they bring back the 0.14 alien artifact. They also drop alien ores as loots, which can be morphed into ordinary ores like iron ore. Also adds alien science pack that can be used for research in other tech mods. Well-suited for combat-heavy, no-mining scenarios. (Locale: English, Deutsch, 正體中文, 简体中文, Русский, Português Brasileiro, Español) (Partial Locale: العربية, Беларуская, Български, Català, Čeština, Dansk, Ελληνικά, Eesti, Suomi, Français, עברית, Magyar, Italiano, 日本語, 한국어, Lietuvių, Latviešu, Nederlands, Norsk, Polski, Português, Română, Svenska, ไทย, Türkçe, Українська)

Allows you to toggle peaceful mode at will

Adds armoured biters to the game with custom sprites and animations. They're heavily armoured but slower than regular biters. This mod is compatible with Rampant (and other mods).

Adds GUI to display evolution factor and monitor alien spawn rates. Adds progressively higher tiers of aliens (configurable) at very-late game, bringing some real challenge! (Locale: English, Deutsch, 正體中文, 简体中文, Português Brasileiro)

"They mostly come at night. Mostly." -- Biters in polluted areas become more aggressive at night. Includes an option to have biters only attack at night.

Be prepared for the big monsters from this planet!

You want killing enemies become more usefull and get some more usefull stuff in this game? Then this mod is for you. Adds enemy drops and exploitation of their corpses. Also provides fireball (incl. towers) and poison ammo.

This mod adds a nest of explosive aliens and worms! These aliens will explode on death (area damage) and spread fire. Fire spitters are also deadly burning everything! And if you see their Mother, run, run for you life! Say goodbye to your walls! Good luck! Note:Autoplace configured for hot areas found in alien-biomes mod.

This mod adds a nest of Cold Aliens and Worms! These aliens will cause cold damage, and may launch a cold cloud over your factory. Autoplace configured for cold areas found in alien-biomes mod. Defeated aliens drops artifacts that can be used to build weapons with cold damage and armors with cold resistance

Take control of the biters and lead them to victory against the invading engineers.

Adds modified version of diplomacy, diplomatic requests, commands needful, auto-diplomacy, customizable protection from theft of electricity, custom balance settings, building prohibition radius near enemy and integration with chat mod. Has compatibility with any PvP scenario. UPS friendly. + 33 locales

Adds alien artifacts back in to the game. Get artifacts from destroying spawners and worms and craft them into Space science packs. Updated to 0.16 and edited by fishycat.

Adds Behemoth and Colossal worms in the late game. These worms can burrow and dig to your base, then attack from beneath.

Turns the once peaceful biters into different factions, warring for domination over Nauvis alongside the player. They will fight amongst themselves for land.

Adds laser-resistant aliens, who counter laser turrets. Also adds fire-resistant aliens, who counter flame turrets. They will put some pressure on your base defense. (Locale: English, Deutsch, 正體中文, 简体中文, Русский, Português Brasileiro, Español)

Inventory items and grid equipment inside destroyed containers, like chests, vehicles (cars, tanks), will now spill over ground, instead of simply vanish. Adds a hotkey to pick items on ground with adjustable pickup radius. (Locale: English, Deutsch, 正體中文, 简体中文, Русский, Português Brasileiro)