The Unreal Engine Marketplace has announced its free February 2019 content:

CCG Toolkit

A customizable card game framework to create single and multiplayer experiences

Hand Painted Textures Starter Kit

21 hand-painted textures that are mobile and PBR ready

Luos's Particle Toolkit Vol. 1

Particle toolkit of meshes, noise textures, material functions and more with over 67 sample particles

Platformer Kit 2D

2D platformer creation toolkit with fully customizable player character and 21 animation states

Scifi Kitbash Level Builder

Collection of SciFi assets, including walls, doors, props, and decals

Medieval Dungeon

Collection of modular meshes and props to build a medieval dungeon and crypt

Particles and Wind Control System

Wind control system with environmental particle effects