Almost all electric fireplaces are designed to mimic the appearance of a real wood burning fireplace. Electric currents and mirrors can simulate flames, making the experience more realistic. Some are just made for design purpose, no heat being emitted.
But most of the electric fireplaces are made to provide some warm to your home. They have the exact designs as those modern fireplaces. They can cost between $150 and $1000. They are very easy to use because they have a control panel.
These fireplaces are not as dangerous as traditional ones, but still some safety guidelines need to be met. They can be mounted on walls or as free standing fireplaces and can be installed even in corners. All you need to make sure is that there are no objects around it.
These fireplaces will not emit sparks. One of the main risks is that it can short circuit, so you will still need to keep flammable objects away from the fireplace.
Also keep water away from it and unplug it when you are not using it. This will prevent any accidents and also reduce the energy costs.
Electric fireplaces are quite new to many people and they should be understood properly. You will need to understand some safety conditions to prevent accidents.